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Finding the Fourth Proportional to 80,462.85, 120,647.55 and 53,839.32

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Solution

The fourth proportional to 80,462.85, 120,647.55 and 53,839.32 is: 80,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,462.85 : 120,647.55 = 53,839.32 : x
  2. Step 2: Convert to fraction form
    80,462.85/120,647.55 = 53,839.32/x
  3. Step 3: Cross multiply
    80,462.85x = 120,647.55 × 53,839.32
  4. Step 4: Simplify right side
    80,462.85x = 6,495,582,051.67
  5. Step 5: Solve for x
    x = 6,495,582,051.67/80,462.85
  6. Step 6: Final answer
    x = 80,727.72

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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.