Home / 80,633.75-120,919.47-38,492.07

Finding the Fourth Proportional to 80,633.75, 120,919.47 and 38,492.07

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Solution

The fourth proportional to 80,633.75, 120,919.47 and 38,492.07 is: 57,723.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,633.75 : 120,919.47 = 38,492.07 : x
  2. Step 2: Convert to fraction form
    80,633.75/120,919.47 = 38,492.07/x
  3. Step 3: Cross multiply
    80,633.75x = 120,919.47 × 38,492.07
  4. Step 4: Simplify right side
    80,633.75x = 4,654,440,703.60
  5. Step 5: Solve for x
    x = 4,654,440,703.60/80,633.75
  6. Step 6: Final answer
    x = 57,723.24

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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.