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Finding the Fourth Proportional to 91,930.59, 126,753.84 and 66,396.15

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Solution

The fourth proportional to 91,930.59, 126,753.84 and 66,396.15 is: 91,546.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,930.59 : 126,753.84 = 66,396.15 : x
  2. Step 2: Convert to fraction form
    91,930.59/126,753.84 = 66,396.15/x
  3. Step 3: Cross multiply
    91,930.59x = 126,753.84 × 66,396.15
  4. Step 4: Simplify right side
    91,930.59x = 8,415,966,973.72
  5. Step 5: Solve for x
    x = 8,415,966,973.72/91,930.59
  6. Step 6: Final answer
    x = 91,546.97

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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.