Home / 42,125.60-63,202.05-12,543.68

Finding the Fourth Proportional to 42,125.60, 63,202.05 and 12,543.68

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Solution

The fourth proportional to 42,125.60, 63,202.05 and 12,543.68 is: 18,819.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,125.60 : 63,202.05 = 12,543.68 : x
  2. Step 2: Convert to fraction form
    42,125.60/63,202.05 = 12,543.68/x
  3. Step 3: Cross multiply
    42,125.60x = 63,202.05 × 12,543.68
  4. Step 4: Simplify right side
    42,125.60x = 792,785,974.53
  5. Step 5: Solve for x
    x = 792,785,974.53/42,125.60
  6. Step 6: Final answer
    x = 18,819.58

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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.