Home / 91,512.85-137,218.33-28,315.04

Finding the Fourth Proportional to 91,512.85, 137,218.33 and 28,315.04

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Solution

The fourth proportional to 91,512.85, 137,218.33 and 28,315.04 is: 42,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,512.85 : 137,218.33 = 28,315.04 : x
  2. Step 2: Convert to fraction form
    91,512.85/137,218.33 = 28,315.04/x
  3. Step 3: Cross multiply
    91,512.85x = 137,218.33 × 28,315.04
  4. Step 4: Simplify right side
    91,512.85x = 3,885,342,502.68
  5. Step 5: Solve for x
    x = 3,885,342,502.68/91,512.85
  6. Step 6: Final answer
    x = 42,456.80

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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.