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Finding the Fourth Proportional to 80,660.16, 120,996 and 21,495.52

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Solution

The fourth proportional to 80,660.16, 120,996 and 21,495.52 is: 32,244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.16 : 120,996 = 21,495.52 : x
  2. Step 2: Convert to fraction form
    80,660.16/120,996 = 21,495.52/x
  3. Step 3: Cross multiply
    80,660.16x = 120,996 × 21,495.52
  4. Step 4: Simplify right side
    80,660.16x = 2,600,871,937.92
  5. Step 5: Solve for x
    x = 2,600,871,937.92/80,660.16
  6. Step 6: Final answer
    x = 32,244.82

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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.