Home / 56,839.52-85,260-21,781.28

Finding the Fourth Proportional to 56,839.52, 85,260 and 21,781.28

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Solution

The fourth proportional to 56,839.52, 85,260 and 21,781.28 is: 32,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,839.52 : 85,260 = 21,781.28 : x
  2. Step 2: Convert to fraction form
    56,839.52/85,260 = 21,781.28/x
  3. Step 3: Cross multiply
    56,839.52x = 85,260 × 21,781.28
  4. Step 4: Simplify right side
    56,839.52x = 1,857,071,932.80
  5. Step 5: Solve for x
    x = 1,857,071,932.80/56,839.52
  6. Step 6: Final answer
    x = 32,672.20

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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.