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Finding the Fourth Proportional to 80,995.43, 121,492.85 and 21,837.08

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Solution

The fourth proportional to 80,995.43, 121,492.85 and 21,837.08 is: 32,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,995.43 : 121,492.85 = 21,837.08 : x
  2. Step 2: Convert to fraction form
    80,995.43/121,492.85 = 21,837.08/x
  3. Step 3: Cross multiply
    80,995.43x = 121,492.85 × 21,837.08
  4. Step 4: Simplify right side
    80,995.43x = 2,653,049,279.42
  5. Step 5: Solve for x
    x = 2,653,049,279.42/80,995.43
  6. Step 6: Final answer
    x = 32,755.54

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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.