Home / 71,764.20-107,646.30-40,660.20

Finding the Fourth Proportional to 71,764.20, 107,646.30 and 40,660.20

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Solution

The fourth proportional to 71,764.20, 107,646.30 and 40,660.20 is: 60,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,764.20 : 107,646.30 = 40,660.20 : x
  2. Step 2: Convert to fraction form
    71,764.20/107,646.30 = 40,660.20/x
  3. Step 3: Cross multiply
    71,764.20x = 107,646.30 × 40,660.20
  4. Step 4: Simplify right side
    71,764.20x = 4,376,920,087.26
  5. Step 5: Solve for x
    x = 4,376,920,087.26/71,764.20
  6. Step 6: Final answer
    x = 60,990.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.