Home / 82,628.89-123,751.10-80,356.03

Finding the Fourth Proportional to 82,628.89, 123,751.10 and 80,356.03

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Solution

The fourth proportional to 82,628.89, 123,751.10 and 80,356.03 is: 120,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,628.89 : 123,751.10 = 80,356.03 : x
  2. Step 2: Convert to fraction form
    82,628.89/123,751.10 = 80,356.03/x
  3. Step 3: Cross multiply
    82,628.89x = 123,751.10 × 80,356.03
  4. Step 4: Simplify right side
    82,628.89x = 9,944,146,995.65
  5. Step 5: Solve for x
    x = 9,944,146,995.65/82,628.89
  6. Step 6: Final answer
    x = 120,347.10

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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.