Home / 80,865.76-121,314.84-34,119.04

Finding the Fourth Proportional to 80,865.76, 121,314.84 and 34,119.04

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Solution

The fourth proportional to 80,865.76, 121,314.84 and 34,119.04 is: 51,185.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,865.76 : 121,314.84 = 34,119.04 : x
  2. Step 2: Convert to fraction form
    80,865.76/121,314.84 = 34,119.04/x
  3. Step 3: Cross multiply
    80,865.76x = 121,314.84 × 34,119.04
  4. Step 4: Simplify right side
    80,865.76x = 4,139,145,878.55
  5. Step 5: Solve for x
    x = 4,139,145,878.55/80,865.76
  6. Step 6: Final answer
    x = 51,185.40

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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.