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Finding the Fourth Proportional to 28,604.60, 42,906.90 and 27,000.80

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Solution

The fourth proportional to 28,604.60, 42,906.90 and 27,000.80 is: 40,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,604.60 : 42,906.90 = 27,000.80 : x
  2. Step 2: Convert to fraction form
    28,604.60/42,906.90 = 27,000.80/x
  3. Step 3: Cross multiply
    28,604.60x = 42,906.90 × 27,000.80
  4. Step 4: Simplify right side
    28,604.60x = 1,158,520,625.52
  5. Step 5: Solve for x
    x = 1,158,520,625.52/28,604.60
  6. Step 6: Final answer
    x = 40,501.20

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Similar ratio
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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.