Home / 89,690.30-123,768.03-49,403.19

Finding the Fourth Proportional to 89,690.30, 123,768.03 and 49,403.19

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Solution

The fourth proportional to 89,690.30, 123,768.03 and 49,403.19 is: 68,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,690.30 : 123,768.03 = 49,403.19 : x
  2. Step 2: Convert to fraction form
    89,690.30/123,768.03 = 49,403.19/x
  3. Step 3: Cross multiply
    89,690.30x = 123,768.03 × 49,403.19
  4. Step 4: Simplify right side
    89,690.30x = 6,114,535,502.02
  5. Step 5: Solve for x
    x = 6,114,535,502.02/89,690.30
  6. Step 6: Final answer
    x = 68,173.88

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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.