Home / 69,138.18-95,419.78-38,929.38

Finding the Fourth Proportional to 69,138.18, 95,419.78 and 38,929.38

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Solution

The fourth proportional to 69,138.18, 95,419.78 and 38,929.38 is: 53,727.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,138.18 : 95,419.78 = 38,929.38 : x
  2. Step 2: Convert to fraction form
    69,138.18/95,419.78 = 38,929.38/x
  3. Step 3: Cross multiply
    69,138.18x = 95,419.78 × 38,929.38
  4. Step 4: Simplify right side
    69,138.18x = 3,714,632,875.14
  5. Step 5: Solve for x
    x = 3,714,632,875.14/69,138.18
  6. Step 6: Final answer
    x = 53,727.66

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1.5x scale

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.