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Finding the Fourth Proportional to 66,497.56, 91,753.30 and 42,308.12

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Solution

The fourth proportional to 66,497.56, 91,753.30 and 42,308.12 is: 58,376.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.56 : 91,753.30 = 42,308.12 : x
  2. Step 2: Convert to fraction form
    66,497.56/91,753.30 = 42,308.12/x
  3. Step 3: Cross multiply
    66,497.56x = 91,753.30 × 42,308.12
  4. Step 4: Simplify right side
    66,497.56x = 3,881,909,626.80
  5. Step 5: Solve for x
    x = 3,881,909,626.80/66,497.56
  6. Step 6: Final answer
    x = 58,376.72

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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.