Home / 80,279.79-120,457.05-35,936.55

Finding the Fourth Proportional to 80,279.79, 120,457.05 and 35,936.55

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Solution

The fourth proportional to 80,279.79, 120,457.05 and 35,936.55 is: 53,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,279.79 : 120,457.05 = 35,936.55 : x
  2. Step 2: Convert to fraction form
    80,279.79/120,457.05 = 35,936.55/x
  3. Step 3: Cross multiply
    80,279.79x = 120,457.05 × 35,936.55
  4. Step 4: Simplify right side
    80,279.79x = 4,328,810,800.18
  5. Step 5: Solve for x
    x = 4,328,810,800.18/80,279.79
  6. Step 6: Final answer
    x = 53,921.55

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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.