Home / 42,180.28-63,138.66-28,151.80

Finding the Fourth Proportional to 42,180.28, 63,138.66 and 28,151.80

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Solution

The fourth proportional to 42,180.28, 63,138.66 and 28,151.80 is: 42,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,180.28 : 63,138.66 = 28,151.80 : x
  2. Step 2: Convert to fraction form
    42,180.28/63,138.66 = 28,151.80/x
  3. Step 3: Cross multiply
    42,180.28x = 63,138.66 × 28,151.80
  4. Step 4: Simplify right side
    42,180.28x = 1,777,466,928.59
  5. Step 5: Solve for x
    x = 1,777,466,928.59/42,180.28
  6. Step 6: Final answer
    x = 42,139.76

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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.