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Finding the Fourth Proportional to 70,172.75, 96,839.82 and 38,343.71

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Solution

The fourth proportional to 70,172.75, 96,839.82 and 38,343.71 is: 52,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,172.75 : 96,839.82 = 38,343.71 : x
  2. Step 2: Convert to fraction form
    70,172.75/96,839.82 = 38,343.71/x
  3. Step 3: Cross multiply
    70,172.75x = 96,839.82 × 38,343.71
  4. Step 4: Simplify right side
    70,172.75x = 3,713,198,216.63
  5. Step 5: Solve for x
    x = 3,713,198,216.63/70,172.75
  6. Step 6: Final answer
    x = 52,915.10

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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.