Home / 75,180.38-112,726.82-28,436.90

Finding the Fourth Proportional to 75,180.38, 112,726.82 and 28,436.90

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Solution

The fourth proportional to 75,180.38, 112,726.82 and 28,436.90 is: 42,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,180.38 : 112,726.82 = 28,436.90 : x
  2. Step 2: Convert to fraction form
    75,180.38/112,726.82 = 28,436.90/x
  3. Step 3: Cross multiply
    75,180.38x = 112,726.82 × 28,436.90
  4. Step 4: Simplify right side
    75,180.38x = 3,205,600,601.84
  5. Step 5: Solve for x
    x = 3,205,600,601.84/75,180.38
  6. Step 6: Final answer
    x = 42,638.80

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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.