Home / 80,381.16-120,581.06-30,498.53

Finding the Fourth Proportional to 80,381.16, 120,581.06 and 30,498.53

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Solution

The fourth proportional to 80,381.16, 120,581.06 and 30,498.53 is: 45,751.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,381.16 : 120,581.06 = 30,498.53 : x
  2. Step 2: Convert to fraction form
    80,381.16/120,581.06 = 30,498.53/x
  3. Step 3: Cross multiply
    80,381.16x = 120,581.06 × 30,498.53
  4. Step 4: Simplify right side
    80,381.16x = 3,677,544,320.44
  5. Step 5: Solve for x
    x = 3,677,544,320.44/80,381.16
  6. Step 6: Final answer
    x = 45,751.32

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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.