Home / 83,740.38-125,717.22-54,281.49

Finding the Fourth Proportional to 83,740.38, 125,717.22 and 54,281.49

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Solution

The fourth proportional to 83,740.38, 125,717.22 and 54,281.49 is: 81,491.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,740.38 : 125,717.22 = 54,281.49 : x
  2. Step 2: Convert to fraction form
    83,740.38/125,717.22 = 54,281.49/x
  3. Step 3: Cross multiply
    83,740.38x = 125,717.22 × 54,281.49
  4. Step 4: Simplify right side
    83,740.38x = 6,824,118,020.26
  5. Step 5: Solve for x
    x = 6,824,118,020.26/83,740.38
  6. Step 6: Final answer
    x = 81,491.37

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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.