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Finding the Fourth Proportional to 66,145.82, 91,279.70 and 35,930.47

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Solution

The fourth proportional to 66,145.82, 91,279.70 and 35,930.47 is: 49,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.82 : 91,279.70 = 35,930.47 : x
  2. Step 2: Convert to fraction form
    66,145.82/91,279.70 = 35,930.47/x
  3. Step 3: Cross multiply
    66,145.82x = 91,279.70 × 35,930.47
  4. Step 4: Simplify right side
    66,145.82x = 3,279,722,420.50
  5. Step 5: Solve for x
    x = 3,279,722,420.50/66,145.82
  6. Step 6: Final answer
    x = 49,583.21

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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.