Home / 80,520.18-120,842.53-55,733.42

Finding the Fourth Proportional to 80,520.18, 120,842.53 and 55,733.42

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Solution

The fourth proportional to 80,520.18, 120,842.53 and 55,733.42 is: 83,643.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,520.18 : 120,842.53 = 55,733.42 : x
  2. Step 2: Convert to fraction form
    80,520.18/120,842.53 = 55,733.42/x
  3. Step 3: Cross multiply
    80,520.18x = 120,842.53 × 55,733.42
  4. Step 4: Simplify right side
    80,520.18x = 6,734,967,274.89
  5. Step 5: Solve for x
    x = 6,734,967,274.89/80,520.18
  6. Step 6: Final answer
    x = 83,643.23

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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.