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Finding the Fourth Proportional to 80,493.70, 120,740.55 and 60,664.90

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Solution

The fourth proportional to 80,493.70, 120,740.55 and 60,664.90 is: 90,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,493.70 : 120,740.55 = 60,664.90 : x
  2. Step 2: Convert to fraction form
    80,493.70/120,740.55 = 60,664.90/x
  3. Step 3: Cross multiply
    80,493.70x = 120,740.55 × 60,664.90
  4. Step 4: Simplify right side
    80,493.70x = 7,324,713,391.70
  5. Step 5: Solve for x
    x = 7,324,713,391.70/80,493.70
  6. Step 6: Final answer
    x = 90,997.35

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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.