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Finding the Fourth Proportional to 71,007.57, 97,990.76 and 39,177.41

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Solution

The fourth proportional to 71,007.57, 97,990.76 and 39,177.41 is: 54,064.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,007.57 : 97,990.76 = 39,177.41 : x
  2. Step 2: Convert to fraction form
    71,007.57/97,990.76 = 39,177.41/x
  3. Step 3: Cross multiply
    71,007.57x = 97,990.76 × 39,177.41
  4. Step 4: Simplify right side
    71,007.57x = 3,839,023,788.72
  5. Step 5: Solve for x
    x = 3,839,023,788.72/71,007.57
  6. Step 6: Final answer
    x = 54,064.99

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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.