Home / 71,439.94-107,151.69-18,853.53

Finding the Fourth Proportional to 71,439.94, 107,151.69 and 18,853.53

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Solution

The fourth proportional to 71,439.94, 107,151.69 and 18,853.53 is: 28,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,439.94 : 107,151.69 = 18,853.53 : x
  2. Step 2: Convert to fraction form
    71,439.94/107,151.69 = 18,853.53/x
  3. Step 3: Cross multiply
    71,439.94x = 107,151.69 × 18,853.53
  4. Step 4: Simplify right side
    71,439.94x = 2,020,187,601.97
  5. Step 5: Solve for x
    x = 2,020,187,601.97/71,439.94
  6. Step 6: Final answer
    x = 28,278.13

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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.