Home / 91,819.60-137,729.40-52,380.70

Finding the Fourth Proportional to 91,819.60, 137,729.40 and 52,380.70

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Solution

The fourth proportional to 91,819.60, 137,729.40 and 52,380.70 is: 78,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,819.60 : 137,729.40 = 52,380.70 : x
  2. Step 2: Convert to fraction form
    91,819.60/137,729.40 = 52,380.70/x
  3. Step 3: Cross multiply
    91,819.60x = 137,729.40 × 52,380.70
  4. Step 4: Simplify right side
    91,819.60x = 7,214,362,382.58
  5. Step 5: Solve for x
    x = 7,214,362,382.58/91,819.60
  6. Step 6: Final answer
    x = 78,571.05

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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.