Home / 87,787.40-131,701.90-28,623.40

Finding the Fourth Proportional to 87,787.40, 131,701.90 and 28,623.40

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Solution

The fourth proportional to 87,787.40, 131,701.90 and 28,623.40 is: 42,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,787.40 : 131,701.90 = 28,623.40 : x
  2. Step 2: Convert to fraction form
    87,787.40/131,701.90 = 28,623.40/x
  3. Step 3: Cross multiply
    87,787.40x = 131,701.90 × 28,623.40
  4. Step 4: Simplify right side
    87,787.40x = 3,769,756,164.46
  5. Step 5: Solve for x
    x = 3,769,756,164.46/87,787.40
  6. Step 6: Final answer
    x = 42,941.88

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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.