Home / 89,721.81-123,808.91-51,998.49

Finding the Fourth Proportional to 89,721.81, 123,808.91 and 51,998.49

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Solution

The fourth proportional to 89,721.81, 123,808.91 and 51,998.49 is: 71,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.81 : 123,808.91 = 51,998.49 : x
  2. Step 2: Convert to fraction form
    89,721.81/123,808.91 = 51,998.49/x
  3. Step 3: Cross multiply
    89,721.81x = 123,808.91 × 51,998.49
  4. Step 4: Simplify right side
    89,721.81x = 6,437,876,108.55
  5. Step 5: Solve for x
    x = 6,437,876,108.55/89,721.81
  6. Step 6: Final answer
    x = 71,753.75

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1.5x scale

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.