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Finding the Fourth Proportional to 80,610.48, 120,915.54 and 21,446.16

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Solution

The fourth proportional to 80,610.48, 120,915.54 and 21,446.16 is: 32,169.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,610.48 : 120,915.54 = 21,446.16 : x
  2. Step 2: Convert to fraction form
    80,610.48/120,915.54 = 21,446.16/x
  3. Step 3: Cross multiply
    80,610.48x = 120,915.54 × 21,446.16
  4. Step 4: Simplify right side
    80,610.48x = 2,593,174,017.33
  5. Step 5: Solve for x
    x = 2,593,174,017.33/80,610.48
  6. Step 6: Final answer
    x = 32,169.19

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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.