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Finding the Fourth Proportional to 70,167.64, 96,839.62 and 39,960.20

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Solution

The fourth proportional to 70,167.64, 96,839.62 and 39,960.20 is: 55,149.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,167.64 : 96,839.62 = 39,960.20 : x
  2. Step 2: Convert to fraction form
    70,167.64/96,839.62 = 39,960.20/x
  3. Step 3: Cross multiply
    70,167.64x = 96,839.62 × 39,960.20
  4. Step 4: Simplify right side
    70,167.64x = 3,869,730,583.12
  5. Step 5: Solve for x
    x = 3,869,730,583.12/70,167.64
  6. Step 6: Final answer
    x = 55,149.79

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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.