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Finding the Fourth Proportional to 85,494.52, 128,267.70 and 41,108.68

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Solution

The fourth proportional to 85,494.52, 128,267.70 and 41,108.68 is: 61,675.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,494.52 : 128,267.70 = 41,108.68 : x
  2. Step 2: Convert to fraction form
    85,494.52/128,267.70 = 41,108.68/x
  3. Step 3: Cross multiply
    85,494.52x = 128,267.70 × 41,108.68
  4. Step 4: Simplify right side
    85,494.52x = 5,272,915,833.64
  5. Step 5: Solve for x
    x = 5,272,915,833.64/85,494.52
  6. Step 6: Final answer
    x = 61,675.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.