Home / 66,140.07-91,211.09-51,008.76

Finding the Fourth Proportional to 66,140.07, 91,211.09 and 51,008.76

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Solution

The fourth proportional to 66,140.07, 91,211.09 and 51,008.76 is: 70,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,140.07 : 91,211.09 = 51,008.76 : x
  2. Step 2: Convert to fraction form
    66,140.07/91,211.09 = 51,008.76/x
  3. Step 3: Cross multiply
    66,140.07x = 91,211.09 × 51,008.76
  4. Step 4: Simplify right side
    66,140.07x = 4,652,564,599.15
  5. Step 5: Solve for x
    x = 4,652,564,599.15/66,140.07
  6. Step 6: Final answer
    x = 70,344.11

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Half scale
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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.