Home / 42,105.42-63,158.13-12,523.68

Finding the Fourth Proportional to 42,105.42, 63,158.13 and 12,523.68

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Solution

The fourth proportional to 42,105.42, 63,158.13 and 12,523.68 is: 18,785.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,105.42 : 63,158.13 = 12,523.68 : x
  2. Step 2: Convert to fraction form
    42,105.42/63,158.13 = 12,523.68/x
  3. Step 3: Cross multiply
    42,105.42x = 63,158.13 × 12,523.68
  4. Step 4: Simplify right side
    42,105.42x = 790,972,209.52
  5. Step 5: Solve for x
    x = 790,972,209.52/42,105.42
  6. Step 6: Final answer
    x = 18,785.52

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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.