Home / 80,135.18-120,261.83-38,015.39

Finding the Fourth Proportional to 80,135.18, 120,261.83 and 38,015.39

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Solution

The fourth proportional to 80,135.18, 120,261.83 and 38,015.39 is: 57,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,135.18 : 120,261.83 = 38,015.39 : x
  2. Step 2: Convert to fraction form
    80,135.18/120,261.83 = 38,015.39/x
  3. Step 3: Cross multiply
    80,135.18x = 120,261.83 × 38,015.39
  4. Step 4: Simplify right side
    80,135.18x = 4,571,799,578.18
  5. Step 5: Solve for x
    x = 4,571,799,578.18/80,135.18
  6. Step 6: Final answer
    x = 57,051.10

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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.