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Finding the Fourth Proportional to 71,192.76, 98,238.69 and 40,972.20

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Solution

The fourth proportional to 71,192.76, 98,238.69 and 40,972.20 is: 56,537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,192.76 : 98,238.69 = 40,972.20 : x
  2. Step 2: Convert to fraction form
    71,192.76/98,238.69 = 40,972.20/x
  3. Step 3: Cross multiply
    71,192.76x = 98,238.69 × 40,972.20
  4. Step 4: Simplify right side
    71,192.76x = 4,025,055,254.42
  5. Step 5: Solve for x
    x = 4,025,055,254.42/71,192.76
  6. Step 6: Final answer
    x = 56,537.42

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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.