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Finding the Fourth Proportional to 71,434.60, 98,580.44 and 39,604.20

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Solution

The fourth proportional to 71,434.60, 98,580.44 and 39,604.20 is: 54,654.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,434.60 : 98,580.44 = 39,604.20 : x
  2. Step 2: Convert to fraction form
    71,434.60/98,580.44 = 39,604.20/x
  3. Step 3: Cross multiply
    71,434.60x = 98,580.44 × 39,604.20
  4. Step 4: Simplify right side
    71,434.60x = 3,904,199,461.85
  5. Step 5: Solve for x
    x = 3,904,199,461.85/71,434.60
  6. Step 6: Final answer
    x = 54,654.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.