Home / 84,312.68-126,531.38-39,939.53

Finding the Fourth Proportional to 84,312.68, 126,531.38 and 39,939.53

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Solution

The fourth proportional to 84,312.68, 126,531.38 and 39,939.53 is: 59,938.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,312.68 : 126,531.38 = 39,939.53 : x
  2. Step 2: Convert to fraction form
    84,312.68/126,531.38 = 39,939.53/x
  3. Step 3: Cross multiply
    84,312.68x = 126,531.38 × 39,939.53
  4. Step 4: Simplify right side
    84,312.68x = 5,053,603,314.64
  5. Step 5: Solve for x
    x = 5,053,603,314.64/84,312.68
  6. Step 6: Final answer
    x = 59,938.83

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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.