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Finding the Fourth Proportional to 95,857.20, 143,785.80 and 54,385.20

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Solution

The fourth proportional to 95,857.20, 143,785.80 and 54,385.20 is: 81,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,857.20 : 143,785.80 = 54,385.20 : x
  2. Step 2: Convert to fraction form
    95,857.20/143,785.80 = 54,385.20/x
  3. Step 3: Cross multiply
    95,857.20x = 143,785.80 × 54,385.20
  4. Step 4: Simplify right side
    95,857.20x = 7,819,819,490.16
  5. Step 5: Solve for x
    x = 7,819,819,490.16/95,857.20
  6. Step 6: Final answer
    x = 81,577.80

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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.