Home / 87,888.56-131,839.70-28,730.21

Finding the Fourth Proportional to 87,888.56, 131,839.70 and 28,730.21

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Solution

The fourth proportional to 87,888.56, 131,839.70 and 28,730.21 is: 43,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,888.56 : 131,839.70 = 28,730.21 : x
  2. Step 2: Convert to fraction form
    87,888.56/131,839.70 = 28,730.21/x
  3. Step 3: Cross multiply
    87,888.56x = 131,839.70 × 28,730.21
  4. Step 4: Simplify right side
    87,888.56x = 3,787,781,464.49
  5. Step 5: Solve for x
    x = 3,787,781,464.49/87,888.56
  6. Step 6: Final answer
    x = 43,097.55

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1.5x scale

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.