Home / 87,819.95-131,729.73-67,858.47

Finding the Fourth Proportional to 87,819.95, 131,729.73 and 67,858.47

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Solution

The fourth proportional to 87,819.95, 131,729.73 and 67,858.47 is: 101,787.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,819.95 : 131,729.73 = 67,858.47 : x
  2. Step 2: Convert to fraction form
    87,819.95/131,729.73 = 67,858.47/x
  3. Step 3: Cross multiply
    87,819.95x = 131,729.73 × 67,858.47
  4. Step 4: Simplify right side
    87,819.95x = 8,938,977,931.31
  5. Step 5: Solve for x
    x = 8,938,977,931.31/87,819.95
  6. Step 6: Final answer
    x = 101,787.55

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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.