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Finding the Fourth Proportional to 80,618.48, 120,927.56 and 21,454.16

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Solution

The fourth proportional to 80,618.48, 120,927.56 and 21,454.16 is: 32,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,618.48 : 120,927.56 = 21,454.16 : x
  2. Step 2: Convert to fraction form
    80,618.48/120,927.56 = 21,454.16/x
  3. Step 3: Cross multiply
    80,618.48x = 120,927.56 × 21,454.16
  4. Step 4: Simplify right side
    80,618.48x = 2,594,399,220.65
  5. Step 5: Solve for x
    x = 2,594,399,220.65/80,618.48
  6. Step 6: Final answer
    x = 32,181.20

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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.