Home / 82,891.31-124,337.82-66,356.47

Finding the Fourth Proportional to 82,891.31, 124,337.82 and 66,356.47

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Solution

The fourth proportional to 82,891.31, 124,337.82 and 66,356.47 is: 99,535.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,891.31 : 124,337.82 = 66,356.47 : x
  2. Step 2: Convert to fraction form
    82,891.31/124,337.82 = 66,356.47/x
  3. Step 3: Cross multiply
    82,891.31x = 124,337.82 × 66,356.47
  4. Step 4: Simplify right side
    82,891.31x = 8,250,618,822.70
  5. Step 5: Solve for x
    x = 8,250,618,822.70/82,891.31
  6. Step 6: Final answer
    x = 99,535.39

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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.