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Finding the Fourth Proportional to 36,125.20, 54,187.80 and 12,748.60

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Solution

The fourth proportional to 36,125.20, 54,187.80 and 12,748.60 is: 19,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,125.20 : 54,187.80 = 12,748.60 : x
  2. Step 2: Convert to fraction form
    36,125.20/54,187.80 = 12,748.60/x
  3. Step 3: Cross multiply
    36,125.20x = 54,187.80 × 12,748.60
  4. Step 4: Simplify right side
    36,125.20x = 690,818,587.08
  5. Step 5: Solve for x
    x = 690,818,587.08/36,125.20
  6. Step 6: Final answer
    x = 19,122.90

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1.5x scale

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.