Home / 84,505.12-126,741.52-25,340.80

Finding the Fourth Proportional to 84,505.12, 126,741.52 and 25,340.80

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Solution

The fourth proportional to 84,505.12, 126,741.52 and 25,340.80 is: 38,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,505.12 : 126,741.52 = 25,340.80 : x
  2. Step 2: Convert to fraction form
    84,505.12/126,741.52 = 25,340.80/x
  3. Step 3: Cross multiply
    84,505.12x = 126,741.52 × 25,340.80
  4. Step 4: Simplify right side
    84,505.12x = 3,211,731,510.02
  5. Step 5: Solve for x
    x = 3,211,731,510.02/84,505.12
  6. Step 6: Final answer
    x = 38,006.35

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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.