Home / 91,861.20-137,660.60-52,334.80

Finding the Fourth Proportional to 91,861.20, 137,660.60 and 52,334.80

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Solution

The fourth proportional to 91,861.20, 137,660.60 and 52,334.80 is: 78,427.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,861.20 : 137,660.60 = 52,334.80 : x
  2. Step 2: Convert to fraction form
    91,861.20/137,660.60 = 52,334.80/x
  3. Step 3: Cross multiply
    91,861.20x = 137,660.60 × 52,334.80
  4. Step 4: Simplify right side
    91,861.20x = 7,204,439,968.88
  5. Step 5: Solve for x
    x = 7,204,439,968.88/91,861.20
  6. Step 6: Final answer
    x = 78,427.45

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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.