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Finding the Fourth Proportional to 78,065.34, 117,110.25 and 25,462.68

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Solution

The fourth proportional to 78,065.34, 117,110.25 and 25,462.68 is: 38,198.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,065.34 : 117,110.25 = 25,462.68 : x
  2. Step 2: Convert to fraction form
    78,065.34/117,110.25 = 25,462.68/x
  3. Step 3: Cross multiply
    78,065.34x = 117,110.25 × 25,462.68
  4. Step 4: Simplify right side
    78,065.34x = 2,981,940,820.47
  5. Step 5: Solve for x
    x = 2,981,940,820.47/78,065.34
  6. Step 6: Final answer
    x = 38,198.01

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1.5x scale

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.