Home / 86,565.66-129,897.09-39,822.18

Finding the Fourth Proportional to 86,565.66, 129,897.09 and 39,822.18

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Solution

The fourth proportional to 86,565.66, 129,897.09 and 39,822.18 is: 59,755.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,565.66 : 129,897.09 = 39,822.18 : x
  2. Step 2: Convert to fraction form
    86,565.66/129,897.09 = 39,822.18/x
  3. Step 3: Cross multiply
    86,565.66x = 129,897.09 × 39,822.18
  4. Step 4: Simplify right side
    86,565.66x = 5,172,785,299.46
  5. Step 5: Solve for x
    x = 5,172,785,299.46/86,565.66
  6. Step 6: Final answer
    x = 59,755.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.