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Finding the Fourth Proportional to 89,470.78, 123,472.05 and 48,637.65

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Solution

The fourth proportional to 89,470.78, 123,472.05 and 48,637.65 is: 67,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,470.78 : 123,472.05 = 48,637.65 : x
  2. Step 2: Convert to fraction form
    89,470.78/123,472.05 = 48,637.65/x
  3. Step 3: Cross multiply
    89,470.78x = 123,472.05 × 48,637.65
  4. Step 4: Simplify right side
    89,470.78x = 6,005,390,352.68
  5. Step 5: Solve for x
    x = 6,005,390,352.68/89,470.78
  6. Step 6: Final answer
    x = 67,121.25

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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.