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Finding the Fourth Proportional to 53,967.80, 80,951.70 and 18,902.90

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Solution

The fourth proportional to 53,967.80, 80,951.70 and 18,902.90 is: 28,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,967.80 : 80,951.70 = 18,902.90 : x
  2. Step 2: Convert to fraction form
    53,967.80/80,951.70 = 18,902.90/x
  3. Step 3: Cross multiply
    53,967.80x = 80,951.70 × 18,902.90
  4. Step 4: Simplify right side
    53,967.80x = 1,530,221,889.93
  5. Step 5: Solve for x
    x = 1,530,221,889.93/53,967.80
  6. Step 6: Final answer
    x = 28,354.35

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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.