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Finding the Fourth Proportional to 73,123.65, 100,910.88 and 39,589.65

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Solution

The fourth proportional to 73,123.65, 100,910.88 and 39,589.65 is: 54,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,123.65 : 100,910.88 = 39,589.65 : x
  2. Step 2: Convert to fraction form
    73,123.65/100,910.88 = 39,589.65/x
  3. Step 3: Cross multiply
    73,123.65x = 100,910.88 × 39,589.65
  4. Step 4: Simplify right side
    73,123.65x = 3,995,026,420.39
  5. Step 5: Solve for x
    x = 3,995,026,420.39/73,123.65
  6. Step 6: Final answer
    x = 54,633.85

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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.