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Finding the Fourth Proportional to 87,871.98, 131,752.58 and 74,549.64

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Solution

The fourth proportional to 87,871.98, 131,752.58 and 74,549.64 is: 111,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,871.98 : 131,752.58 = 74,549.64 : x
  2. Step 2: Convert to fraction form
    87,871.98/131,752.58 = 74,549.64/x
  3. Step 3: Cross multiply
    87,871.98x = 131,752.58 × 74,549.64
  4. Step 4: Simplify right side
    87,871.98x = 9,822,107,408.07
  5. Step 5: Solve for x
    x = 9,822,107,408.07/87,871.98
  6. Step 6: Final answer
    x = 111,777.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.