Home / 92,170.05-138,308.80-38,858.78

Finding the Fourth Proportional to 92,170.05, 138,308.80 and 38,858.78

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Solution

The fourth proportional to 92,170.05, 138,308.80 and 38,858.78 is: 58,310.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,170.05 : 138,308.80 = 38,858.78 : x
  2. Step 2: Convert to fraction form
    92,170.05/138,308.80 = 38,858.78/x
  3. Step 3: Cross multiply
    92,170.05x = 138,308.80 × 38,858.78
  4. Step 4: Simplify right side
    92,170.05x = 5,374,510,744.20
  5. Step 5: Solve for x
    x = 5,374,510,744.20/92,170.05
  6. Step 6: Final answer
    x = 58,310.81

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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.