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Finding the Fourth Proportional to 87,373.44, 130,424.40 and 80,881.92

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Solution

The fourth proportional to 87,373.44, 130,424.40 and 80,881.92 is: 120,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,373.44 : 130,424.40 = 80,881.92 : x
  2. Step 2: Convert to fraction form
    87,373.44/130,424.40 = 80,881.92/x
  3. Step 3: Cross multiply
    87,373.44x = 130,424.40 × 80,881.92
  4. Step 4: Simplify right side
    87,373.44x = 10,548,975,886.85
  5. Step 5: Solve for x
    x = 10,548,975,886.85/87,373.44
  6. Step 6: Final answer
    x = 120,734.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.