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Finding the Fourth Proportional to 80,570.79, 120,845.25 and 23,643.18

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Solution

The fourth proportional to 80,570.79, 120,845.25 and 23,643.18 is: 35,461.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,570.79 : 120,845.25 = 23,643.18 : x
  2. Step 2: Convert to fraction form
    80,570.79/120,845.25 = 23,643.18/x
  3. Step 3: Cross multiply
    80,570.79x = 120,845.25 × 23,643.18
  4. Step 4: Simplify right side
    80,570.79x = 2,857,165,997.90
  5. Step 5: Solve for x
    x = 2,857,165,997.90/80,570.79
  6. Step 6: Final answer
    x = 35,461.56

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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.