Home / 75,287.10-112,949.28-53,143.86

Finding the Fourth Proportional to 75,287.10, 112,949.28 and 53,143.86

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Solution

The fourth proportional to 75,287.10, 112,949.28 and 53,143.86 is: 79,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,287.10 : 112,949.28 = 53,143.86 : x
  2. Step 2: Convert to fraction form
    75,287.10/112,949.28 = 53,143.86/x
  3. Step 3: Cross multiply
    75,287.10x = 112,949.28 × 53,143.86
  4. Step 4: Simplify right side
    75,287.10x = 6,002,560,723.42
  5. Step 5: Solve for x
    x = 6,002,560,723.42/75,287.10
  6. Step 6: Final answer
    x = 79,728.94

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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.