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Finding the Fourth Proportional to 71,064.88, 98,069.68 and 39,233.84

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Solution

The fourth proportional to 71,064.88, 98,069.68 and 39,233.84 is: 54,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,064.88 : 98,069.68 = 39,233.84 : x
  2. Step 2: Convert to fraction form
    71,064.88/98,069.68 = 39,233.84/x
  3. Step 3: Cross multiply
    71,064.88x = 98,069.68 × 39,233.84
  4. Step 4: Simplify right side
    71,064.88x = 3,847,650,133.97
  5. Step 5: Solve for x
    x = 3,847,650,133.97/71,064.88
  6. Step 6: Final answer
    x = 54,142.78

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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.