Home / 89,621.78-123,678.09-49,337.10

Finding the Fourth Proportional to 89,621.78, 123,678.09 and 49,337.10

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Solution

The fourth proportional to 89,621.78, 123,678.09 and 49,337.10 is: 68,085.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,621.78 : 123,678.09 = 49,337.10 : x
  2. Step 2: Convert to fraction form
    89,621.78/123,678.09 = 49,337.10/x
  3. Step 3: Cross multiply
    89,621.78x = 123,678.09 × 49,337.10
  4. Step 4: Simplify right side
    89,621.78x = 6,101,918,294.14
  5. Step 5: Solve for x
    x = 6,101,918,294.14/89,621.78
  6. Step 6: Final answer
    x = 68,085.22

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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.