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Finding the Fourth Proportional to 80,871.46, 111,599.42 and 45,060.54

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Solution

The fourth proportional to 80,871.46, 111,599.42 and 45,060.54 is: 62,181.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871.46 : 111,599.42 = 45,060.54 : x
  2. Step 2: Convert to fraction form
    80,871.46/111,599.42 = 45,060.54/x
  3. Step 3: Cross multiply
    80,871.46x = 111,599.42 × 45,060.54
  4. Step 4: Simplify right side
    80,871.46x = 5,028,730,128.89
  5. Step 5: Solve for x
    x = 5,028,730,128.89/80,871.46
  6. Step 6: Final answer
    x = 62,181.77

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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.