Home / 80,628.06-120,810.55-49,047.78

Finding the Fourth Proportional to 80,628.06, 120,810.55 and 49,047.78

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Solution

The fourth proportional to 80,628.06, 120,810.55 and 49,047.78 is: 73,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,628.06 : 120,810.55 = 49,047.78 : x
  2. Step 2: Convert to fraction form
    80,628.06/120,810.55 = 49,047.78/x
  3. Step 3: Cross multiply
    80,628.06x = 120,810.55 × 49,047.78
  4. Step 4: Simplify right side
    80,628.06x = 5,925,489,278.08
  5. Step 5: Solve for x
    x = 5,925,489,278.08/80,628.06
  6. Step 6: Final answer
    x = 73,491.65

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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.