Home / 87,822.40-131,431.20-52,787.20

Finding the Fourth Proportional to 87,822.40, 131,431.20 and 52,787.20

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Solution

The fourth proportional to 87,822.40, 131,431.20 and 52,787.20 is: 78,999.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,822.40 : 131,431.20 = 52,787.20 : x
  2. Step 2: Convert to fraction form
    87,822.40/131,431.20 = 52,787.20/x
  3. Step 3: Cross multiply
    87,822.40x = 131,431.20 × 52,787.20
  4. Step 4: Simplify right side
    87,822.40x = 6,937,885,040.64
  5. Step 5: Solve for x
    x = 6,937,885,040.64/87,822.40
  6. Step 6: Final answer
    x = 78,999.04

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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.