Home / 87,728.64-131,612.40-40,956

Finding the Fourth Proportional to 87,728.64, 131,612.40 and 40,956

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Solution

The fourth proportional to 87,728.64, 131,612.40 and 40,956 is: 61,443.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,728.64 : 131,612.40 = 40,956 : x
  2. Step 2: Convert to fraction form
    87,728.64/131,612.40 = 40,956/x
  3. Step 3: Cross multiply
    87,728.64x = 131,612.40 × 40,956
  4. Step 4: Simplify right side
    87,728.64x = 5,390,317,454.40
  5. Step 5: Solve for x
    x = 5,390,317,454.40/87,728.64
  6. Step 6: Final answer
    x = 61,443.08

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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.