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Finding the Fourth Proportional to 80,652.16, 120,978.12 and 21,488.04

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Solution

The fourth proportional to 80,652.16, 120,978.12 and 21,488.04 is: 32,232.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,652.16 : 120,978.12 = 21,488.04 : x
  2. Step 2: Convert to fraction form
    80,652.16/120,978.12 = 21,488.04/x
  3. Step 3: Cross multiply
    80,652.16x = 120,978.12 × 21,488.04
  4. Step 4: Simplify right side
    80,652.16x = 2,599,582,681.68
  5. Step 5: Solve for x
    x = 2,599,582,681.68/80,652.16
  6. Step 6: Final answer
    x = 32,232.03

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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.