Home / 89,721.13-123,816.60-49,434.31

Finding the Fourth Proportional to 89,721.13, 123,816.60 and 49,434.31

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Solution

The fourth proportional to 89,721.13, 123,816.60 and 49,434.31 is: 68,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.13 : 123,816.60 = 49,434.31 : x
  2. Step 2: Convert to fraction form
    89,721.13/123,816.60 = 49,434.31/x
  3. Step 3: Cross multiply
    89,721.13x = 123,816.60 × 49,434.31
  4. Step 4: Simplify right side
    89,721.13x = 6,120,788,187.55
  5. Step 5: Solve for x
    x = 6,120,788,187.55/89,721.13
  6. Step 6: Final answer
    x = 68,220.14

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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.