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Finding the Fourth Proportional to 80,557.70, 120,827.25 and 21,398.13

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Solution

The fourth proportional to 80,557.70, 120,827.25 and 21,398.13 is: 32,094.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,557.70 : 120,827.25 = 21,398.13 : x
  2. Step 2: Convert to fraction form
    80,557.70/120,827.25 = 21,398.13/x
  3. Step 3: Cross multiply
    80,557.70x = 120,827.25 × 21,398.13
  4. Step 4: Simplify right side
    80,557.70x = 2,585,477,203.04
  5. Step 5: Solve for x
    x = 2,585,477,203.04/80,557.70
  6. Step 6: Final answer
    x = 32,094.73

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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.