Home / 68,742.85-102,981.27-38,665.72

Finding the Fourth Proportional to 68,742.85, 102,981.27 and 38,665.72

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Solution

The fourth proportional to 68,742.85, 102,981.27 and 38,665.72 is: 57,923.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,742.85 : 102,981.27 = 38,665.72 : x
  2. Step 2: Convert to fraction form
    68,742.85/102,981.27 = 38,665.72/x
  3. Step 3: Cross multiply
    68,742.85x = 102,981.27 × 38,665.72
  4. Step 4: Simplify right side
    68,742.85x = 3,981,844,242.83
  5. Step 5: Solve for x
    x = 3,981,844,242.83/68,742.85
  6. Step 6: Final answer
    x = 57,923.76

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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.