Home / 83,751.20-125,432.40-57,312.80

Finding the Fourth Proportional to 83,751.20, 125,432.40 and 57,312.80

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Solution

The fourth proportional to 83,751.20, 125,432.40 and 57,312.80 is: 85,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,751.20 : 125,432.40 = 57,312.80 : x
  2. Step 2: Convert to fraction form
    83,751.20/125,432.40 = 57,312.80/x
  3. Step 3: Cross multiply
    83,751.20x = 125,432.40 × 57,312.80
  4. Step 4: Simplify right side
    83,751.20x = 7,188,882,054.72
  5. Step 5: Solve for x
    x = 7,188,882,054.72/83,751.20
  6. Step 6: Final answer
    x = 85,836.17

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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.