Home / 42,060.60-63,090.45-12,478.73

Finding the Fourth Proportional to 42,060.60, 63,090.45 and 12,478.73

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Solution

The fourth proportional to 42,060.60, 63,090.45 and 12,478.73 is: 18,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,060.60 : 63,090.45 = 12,478.73 : x
  2. Step 2: Convert to fraction form
    42,060.60/63,090.45 = 12,478.73/x
  3. Step 3: Cross multiply
    42,060.60x = 63,090.45 × 12,478.73
  4. Step 4: Simplify right side
    42,060.60x = 787,288,375.68
  5. Step 5: Solve for x
    x = 787,288,375.68/42,060.60
  6. Step 6: Final answer
    x = 18,717.95

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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.