Home / 99,890.92-137,853.67-57,449.49

Finding the Fourth Proportional to 99,890.92, 137,853.67 and 57,449.49

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Solution

The fourth proportional to 99,890.92, 137,853.67 and 57,449.49 is: 79,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,890.92 : 137,853.67 = 57,449.49 : x
  2. Step 2: Convert to fraction form
    99,890.92/137,853.67 = 57,449.49/x
  3. Step 3: Cross multiply
    99,890.92x = 137,853.67 × 57,449.49
  4. Step 4: Simplify right side
    99,890.92x = 7,919,623,036.13
  5. Step 5: Solve for x
    x = 7,919,623,036.13/99,890.92
  6. Step 6: Final answer
    x = 79,282.71

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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.