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Finding the Fourth Proportional to 66,497.52, 91,753.12 and 42,308.10

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Solution

The fourth proportional to 66,497.52, 91,753.12 and 42,308.10 is: 58,376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.52 : 91,753.12 = 42,308.10 : x
  2. Step 2: Convert to fraction form
    66,497.52/91,753.12 = 42,308.10/x
  3. Step 3: Cross multiply
    66,497.52x = 91,753.12 × 42,308.10
  4. Step 4: Simplify right side
    66,497.52x = 3,881,900,176.27
  5. Step 5: Solve for x
    x = 3,881,900,176.27/66,497.52
  6. Step 6: Final answer
    x = 58,376.62

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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.