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Finding the Fourth Proportional to 89,129.66, 122,995.34 and 53,339.42

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Solution

The fourth proportional to 89,129.66, 122,995.34 and 53,339.42 is: 73,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,129.66 : 122,995.34 = 53,339.42 : x
  2. Step 2: Convert to fraction form
    89,129.66/122,995.34 = 53,339.42/x
  3. Step 3: Cross multiply
    89,129.66x = 122,995.34 × 53,339.42
  4. Step 4: Simplify right side
    89,129.66x = 6,560,500,098.30
  5. Step 5: Solve for x
    x = 6,560,500,098.30/89,129.66
  6. Step 6: Final answer
    x = 73,606.25

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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.