Home / 99,879.55-137,832.85-54,557.52

Finding the Fourth Proportional to 99,879.55, 137,832.85 and 54,557.52

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Solution

The fourth proportional to 99,879.55, 137,832.85 and 54,557.52 is: 75,288.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,879.55 : 137,832.85 = 54,557.52 : x
  2. Step 2: Convert to fraction form
    99,879.55/137,832.85 = 54,557.52/x
  3. Step 3: Cross multiply
    99,879.55x = 137,832.85 × 54,557.52
  4. Step 4: Simplify right side
    99,879.55x = 7,519,818,470.53
  5. Step 5: Solve for x
    x = 7,519,818,470.53/99,879.55
  6. Step 6: Final answer
    x = 75,288.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.