Home / 71,920.91-99,248.79-40,089.13

Finding the Fourth Proportional to 71,920.91, 99,248.79 and 40,089.13

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Solution

The fourth proportional to 71,920.91, 99,248.79 and 40,089.13 is: 55,321.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,920.91 : 99,248.79 = 40,089.13 : x
  2. Step 2: Convert to fraction form
    71,920.91/99,248.79 = 40,089.13/x
  3. Step 3: Cross multiply
    71,920.91x = 99,248.79 × 40,089.13
  4. Step 4: Simplify right side
    71,920.91x = 3,978,797,546.86
  5. Step 5: Solve for x
    x = 3,978,797,546.86/71,920.91
  6. Step 6: Final answer
    x = 55,321.84

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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.