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Finding the Fourth Proportional to 89,354.68, 123,351.44 and 51,621.64

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Solution

The fourth proportional to 89,354.68, 123,351.44 and 51,621.64 is: 71,262.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,354.68 : 123,351.44 = 51,621.64 : x
  2. Step 2: Convert to fraction form
    89,354.68/123,351.44 = 51,621.64/x
  3. Step 3: Cross multiply
    89,354.68x = 123,351.44 × 51,621.64
  4. Step 4: Simplify right side
    89,354.68x = 6,367,603,629.16
  5. Step 5: Solve for x
    x = 6,367,603,629.16/89,354.68
  6. Step 6: Final answer
    x = 71,262.12

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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.