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Finding the Fourth Proportional to 71,120.80, 98,127.12 and 41,312.80

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Solution

The fourth proportional to 71,120.80, 98,127.12 and 41,312.80 is: 57,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,120.80 : 98,127.12 = 41,312.80 : x
  2. Step 2: Convert to fraction form
    71,120.80/98,127.12 = 41,312.80/x
  3. Step 3: Cross multiply
    71,120.80x = 98,127.12 × 41,312.80
  4. Step 4: Simplify right side
    71,120.80x = 4,053,906,083.14
  5. Step 5: Solve for x
    x = 4,053,906,083.14/71,120.80
  6. Step 6: Final answer
    x = 57,000.29

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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.