Home / 78,449.20-117,600.90-54,756.70

Finding the Fourth Proportional to 78,449.20, 117,600.90 and 54,756.70

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Solution

The fourth proportional to 78,449.20, 117,600.90 and 54,756.70 is: 82,084.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,449.20 : 117,600.90 = 54,756.70 : x
  2. Step 2: Convert to fraction form
    78,449.20/117,600.90 = 54,756.70/x
  3. Step 3: Cross multiply
    78,449.20x = 117,600.90 × 54,756.70
  4. Step 4: Simplify right side
    78,449.20x = 6,439,437,201.03
  5. Step 5: Solve for x
    x = 6,439,437,201.03/78,449.20
  6. Step 6: Final answer
    x = 82,084.17

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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.