Home / 80,787.92-121,237.23-28,197.41

Finding the Fourth Proportional to 80,787.92, 121,237.23 and 28,197.41

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Solution

The fourth proportional to 80,787.92, 121,237.23 and 28,197.41 is: 42,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,787.92 : 121,237.23 = 28,197.41 : x
  2. Step 2: Convert to fraction form
    80,787.92/121,237.23 = 28,197.41/x
  3. Step 3: Cross multiply
    80,787.92x = 121,237.23 × 28,197.41
  4. Step 4: Simplify right side
    80,787.92x = 3,418,575,275.39
  5. Step 5: Solve for x
    x = 3,418,575,275.39/80,787.92
  6. Step 6: Final answer
    x = 42,315.43

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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.