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Finding the Fourth Proportional to 66,269.68, 91,454.54 and 37,980.76

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Solution

The fourth proportional to 66,269.68, 91,454.54 and 37,980.76 is: 52,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,269.68 : 91,454.54 = 37,980.76 : x
  2. Step 2: Convert to fraction form
    66,269.68/91,454.54 = 37,980.76/x
  3. Step 3: Cross multiply
    66,269.68x = 91,454.54 × 37,980.76
  4. Step 4: Simplify right side
    66,269.68x = 3,473,512,934.65
  5. Step 5: Solve for x
    x = 3,473,512,934.65/66,269.68
  6. Step 6: Final answer
    x = 52,414.81

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.