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Finding the Fourth Proportional to 80,697.83, 111,317.49 and 48,423.87

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Solution

The fourth proportional to 80,697.83, 111,317.49 and 48,423.87 is: 66,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,697.83 : 111,317.49 = 48,423.87 : x
  2. Step 2: Convert to fraction form
    80,697.83/111,317.49 = 48,423.87/x
  3. Step 3: Cross multiply
    80,697.83x = 111,317.49 × 48,423.87
  4. Step 4: Simplify right side
    80,697.83x = 5,390,423,664.49
  5. Step 5: Solve for x
    x = 5,390,423,664.49/80,697.83
  6. Step 6: Final answer
    x = 66,797.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.