Home / 87,712.38-131,567.42-21,152.02

Finding the Fourth Proportional to 87,712.38, 131,567.42 and 21,152.02

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Solution

The fourth proportional to 87,712.38, 131,567.42 and 21,152.02 is: 31,727.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.38 : 131,567.42 = 21,152.02 : x
  2. Step 2: Convert to fraction form
    87,712.38/131,567.42 = 21,152.02/x
  3. Step 3: Cross multiply
    87,712.38x = 131,567.42 × 21,152.02
  4. Step 4: Simplify right side
    87,712.38x = 2,782,916,699.19
  5. Step 5: Solve for x
    x = 2,782,916,699.19/87,712.38
  6. Step 6: Final answer
    x = 31,727.75

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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.