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Finding the Fourth Proportional to 71,992.68, 99,350.22 and 40,162.92

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Solution

The fourth proportional to 71,992.68, 99,350.22 and 40,162.92 is: 55,425.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,992.68 : 99,350.22 = 40,162.92 : x
  2. Step 2: Convert to fraction form
    71,992.68/99,350.22 = 40,162.92/x
  3. Step 3: Cross multiply
    71,992.68x = 99,350.22 × 40,162.92
  4. Step 4: Simplify right side
    71,992.68x = 3,990,194,937.84
  5. Step 5: Solve for x
    x = 3,990,194,937.84/71,992.68
  6. Step 6: Final answer
    x = 55,425.01

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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.