Home / 80,701.18-120,999.84-38,580.32

Finding the Fourth Proportional to 80,701.18, 120,999.84 and 38,580.32

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Solution

The fourth proportional to 80,701.18, 120,999.84 and 38,580.32 is: 57,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,701.18 : 120,999.84 = 38,580.32 : x
  2. Step 2: Convert to fraction form
    80,701.18/120,999.84 = 38,580.32/x
  3. Step 3: Cross multiply
    80,701.18x = 120,999.84 × 38,580.32
  4. Step 4: Simplify right side
    80,701.18x = 4,668,212,241.36
  5. Step 5: Solve for x
    x = 4,668,212,241.36/80,701.18
  6. Step 6: Final answer
    x = 57,845.65

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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.