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Finding the Fourth Proportional to 81,565.92, 112,496.04 and 67,394.16

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Solution

The fourth proportional to 81,565.92, 112,496.04 and 67,394.16 is: 92,950.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,565.92 : 112,496.04 = 67,394.16 : x
  2. Step 2: Convert to fraction form
    81,565.92/112,496.04 = 67,394.16/x
  3. Step 3: Cross multiply
    81,565.92x = 112,496.04 × 67,394.16
  4. Step 4: Simplify right side
    81,565.92x = 7,581,576,119.13
  5. Step 5: Solve for x
    x = 7,581,576,119.13/81,565.92
  6. Step 6: Final answer
    x = 92,950.29

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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.