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Finding the Fourth Proportional to 86,689.92, 119,565.72 and 59,877.30

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Solution

The fourth proportional to 86,689.92, 119,565.72 and 59,877.30 is: 82,584.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,689.92 : 119,565.72 = 59,877.30 : x
  2. Step 2: Convert to fraction form
    86,689.92/119,565.72 = 59,877.30/x
  3. Step 3: Cross multiply
    86,689.92x = 119,565.72 × 59,877.30
  4. Step 4: Simplify right side
    86,689.92x = 7,159,272,486.16
  5. Step 5: Solve for x
    x = 7,159,272,486.16/86,689.92
  6. Step 6: Final answer
    x = 82,584.83

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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.