Home / 84,438.72-126,691.56-31,862.16

Finding the Fourth Proportional to 84,438.72, 126,691.56 and 31,862.16

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Solution

The fourth proportional to 84,438.72, 126,691.56 and 31,862.16 is: 47,805.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,438.72 : 126,691.56 = 31,862.16 : x
  2. Step 2: Convert to fraction form
    84,438.72/126,691.56 = 31,862.16/x
  3. Step 3: Cross multiply
    84,438.72x = 126,691.56 × 31,862.16
  4. Step 4: Simplify right side
    84,438.72x = 4,036,666,755.37
  5. Step 5: Solve for x
    x = 4,036,666,755.37/84,438.72
  6. Step 6: Final answer
    x = 47,805.87

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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.