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Finding the Fourth Proportional to 95,040, 131,155.20 and 55,296

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Solution

The fourth proportional to 95,040, 131,155.20 and 55,296 is: 76,308.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,040 : 131,155.20 = 55,296 : x
  2. Step 2: Convert to fraction form
    95,040/131,155.20 = 55,296/x
  3. Step 3: Cross multiply
    95,040x = 131,155.20 × 55,296
  4. Step 4: Simplify right side
    95,040x = 7,252,357,939.20
  5. Step 5: Solve for x
    x = 7,252,357,939.20/95,040
  6. Step 6: Final answer
    x = 76,308.48

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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.