Home / 90,787.67-136,203.38-28,458.17

Finding the Fourth Proportional to 90,787.67, 136,203.38 and 28,458.17

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Solution

The fourth proportional to 90,787.67, 136,203.38 and 28,458.17 is: 42,694.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,787.67 : 136,203.38 = 28,458.17 : x
  2. Step 2: Convert to fraction form
    90,787.67/136,203.38 = 28,458.17/x
  3. Step 3: Cross multiply
    90,787.67x = 136,203.38 × 28,458.17
  4. Step 4: Simplify right side
    90,787.67x = 3,876,098,119.31
  5. Step 5: Solve for x
    x = 3,876,098,119.31/90,787.67
  6. Step 6: Final answer
    x = 42,694.11

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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.