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Finding the Fourth Proportional to 71,574.88, 98,772.96 and 39,310.12

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Solution

The fourth proportional to 71,574.88, 98,772.96 and 39,310.12 is: 54,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,574.88 : 98,772.96 = 39,310.12 : x
  2. Step 2: Convert to fraction form
    71,574.88/98,772.96 = 39,310.12/x
  3. Step 3: Cross multiply
    71,574.88x = 98,772.96 × 39,310.12
  4. Step 4: Simplify right side
    71,574.88x = 3,882,776,910.36
  5. Step 5: Solve for x
    x = 3,882,776,910.36/71,574.88
  6. Step 6: Final answer
    x = 54,247.76

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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.