Home / 84,070.90-126,155.22-31,517.02

Finding the Fourth Proportional to 84,070.90, 126,155.22 and 31,517.02

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Solution

The fourth proportional to 84,070.90, 126,155.22 and 31,517.02 is: 47,293.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,070.90 : 126,155.22 = 31,517.02 : x
  2. Step 2: Convert to fraction form
    84,070.90/126,155.22 = 31,517.02/x
  3. Step 3: Cross multiply
    84,070.90x = 126,155.22 × 31,517.02
  4. Step 4: Simplify right side
    84,070.90x = 3,976,036,591.84
  5. Step 5: Solve for x
    x = 3,976,036,591.84/84,070.90
  6. Step 6: Final answer
    x = 47,293.85

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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.