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Finding the Fourth Proportional to 89,778.44, 123,888.56 and 49,489.99

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Solution

The fourth proportional to 89,778.44, 123,888.56 and 49,489.99 is: 68,293.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.44 : 123,888.56 = 49,489.99 : x
  2. Step 2: Convert to fraction form
    89,778.44/123,888.56 = 49,489.99/x
  3. Step 3: Cross multiply
    89,778.44x = 123,888.56 × 49,489.99
  4. Step 4: Simplify right side
    89,778.44x = 6,131,243,038.34
  5. Step 5: Solve for x
    x = 6,131,243,038.34/89,778.44
  6. Step 6: Final answer
    x = 68,293.04

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1.5x scale

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.