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Finding the Fourth Proportional to 89,778.49, 123,888.75 and 49,492.60

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Solution

The fourth proportional to 89,778.49, 123,888.75 and 49,492.60 is: 68,296.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.49 : 123,888.75 = 49,492.60 : x
  2. Step 2: Convert to fraction form
    89,778.49/123,888.75 = 49,492.60/x
  3. Step 3: Cross multiply
    89,778.49x = 123,888.75 × 49,492.60
  4. Step 4: Simplify right side
    89,778.49x = 6,131,576,348.25
  5. Step 5: Solve for x
    x = 6,131,576,348.25/89,778.49
  6. Step 6: Final answer
    x = 68,296.72

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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.