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Finding the Fourth Proportional to 80,608.47, 120,912.56 and 21,444.14

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Solution

The fourth proportional to 80,608.47, 120,912.56 and 21,444.14 is: 32,166.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,608.47 : 120,912.56 = 21,444.14 : x
  2. Step 2: Convert to fraction form
    80,608.47/120,912.56 = 21,444.14/x
  3. Step 3: Cross multiply
    80,608.47x = 120,912.56 × 21,444.14
  4. Step 4: Simplify right side
    80,608.47x = 2,592,865,864.40
  5. Step 5: Solve for x
    x = 2,592,865,864.40/80,608.47
  6. Step 6: Final answer
    x = 32,166.17

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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.