Home / 80,438.18-120,667.51-30,532.55

Finding the Fourth Proportional to 80,438.18, 120,667.51 and 30,532.55

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Solution

The fourth proportional to 80,438.18, 120,667.51 and 30,532.55 is: 45,802.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,438.18 : 120,667.51 = 30,532.55 : x
  2. Step 2: Convert to fraction form
    80,438.18/120,667.51 = 30,532.55/x
  3. Step 3: Cross multiply
    80,438.18x = 120,667.51 × 30,532.55
  4. Step 4: Simplify right side
    80,438.18x = 3,684,286,217.28
  5. Step 5: Solve for x
    x = 3,684,286,217.28/80,438.18
  6. Step 6: Final answer
    x = 45,802.71

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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.