Home / 42,520.30-63,781.50-20,336.02

Finding the Fourth Proportional to 42,520.30, 63,781.50 and 20,336.02

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Solution

The fourth proportional to 42,520.30, 63,781.50 and 20,336.02 is: 30,504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,520.30 : 63,781.50 = 20,336.02 : x
  2. Step 2: Convert to fraction form
    42,520.30/63,781.50 = 20,336.02/x
  3. Step 3: Cross multiply
    42,520.30x = 63,781.50 × 20,336.02
  4. Step 4: Simplify right side
    42,520.30x = 1,297,061,859.63
  5. Step 5: Solve for x
    x = 1,297,061,859.63/42,520.30
  6. Step 6: Final answer
    x = 30,504.53

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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.