Home / 83,529.30-124,929.45-74,708.40

Finding the Fourth Proportional to 83,529.30, 124,929.45 and 74,708.40

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Solution

The fourth proportional to 83,529.30, 124,929.45 and 74,708.40 is: 111,736.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,529.30 : 124,929.45 = 74,708.40 : x
  2. Step 2: Convert to fraction form
    83,529.30/124,929.45 = 74,708.40/x
  3. Step 3: Cross multiply
    83,529.30x = 124,929.45 × 74,708.40
  4. Step 4: Simplify right side
    83,529.30x = 9,333,279,322.38
  5. Step 5: Solve for x
    x = 9,333,279,322.38/83,529.30
  6. Step 6: Final answer
    x = 111,736.59

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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.