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Finding the Fourth Proportional to 71,630.88, 98,849.90 and 39,799.10

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Solution

The fourth proportional to 71,630.88, 98,849.90 and 39,799.10 is: 54,922.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,630.88 : 98,849.90 = 39,799.10 : x
  2. Step 2: Convert to fraction form
    71,630.88/98,849.90 = 39,799.10/x
  3. Step 3: Cross multiply
    71,630.88x = 98,849.90 × 39,799.10
  4. Step 4: Simplify right side
    71,630.88x = 3,934,136,361.85
  5. Step 5: Solve for x
    x = 3,934,136,361.85/71,630.88
  6. Step 6: Final answer
    x = 54,922.35

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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.