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Finding the Fourth Proportional to 89,138.08, 123,016.08 and 49,394.08

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Solution

The fourth proportional to 89,138.08, 123,016.08 and 49,394.08 is: 68,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,138.08 : 123,016.08 = 49,394.08 : x
  2. Step 2: Convert to fraction form
    89,138.08/123,016.08 = 49,394.08/x
  3. Step 3: Cross multiply
    89,138.08x = 123,016.08 × 49,394.08
  4. Step 4: Simplify right side
    89,138.08x = 6,076,266,096.81
  5. Step 5: Solve for x
    x = 6,076,266,096.81/89,138.08
  6. Step 6: Final answer
    x = 68,166.89

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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.