Home / 89,687.02-123,768.07-49,400.78

Finding the Fourth Proportional to 89,687.02, 123,768.07 and 49,400.78

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Solution

The fourth proportional to 89,687.02, 123,768.07 and 49,400.78 is: 68,173.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,687.02 : 123,768.07 = 49,400.78 : x
  2. Step 2: Convert to fraction form
    89,687.02/123,768.07 = 49,400.78/x
  3. Step 3: Cross multiply
    89,687.02x = 123,768.07 × 49,400.78
  4. Step 4: Simplify right side
    89,687.02x = 6,114,238,331.25
  5. Step 5: Solve for x
    x = 6,114,238,331.25/89,687.02
  6. Step 6: Final answer
    x = 68,173.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.