Home / 89,660.48-123,689.92-57,839.64

Finding the Fourth Proportional to 89,660.48, 123,689.92 and 57,839.64

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Solution

The fourth proportional to 89,660.48, 123,689.92 and 57,839.64 is: 79,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,660.48 : 123,689.92 = 57,839.64 : x
  2. Step 2: Convert to fraction form
    89,660.48/123,689.92 = 57,839.64/x
  3. Step 3: Cross multiply
    89,660.48x = 123,689.92 × 57,839.64
  4. Step 4: Simplify right side
    89,660.48x = 7,154,180,444.43
  5. Step 5: Solve for x
    x = 7,154,180,444.43/89,660.48
  6. Step 6: Final answer
    x = 79,791.90

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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.