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Finding the Fourth Proportional to 95,875.20, 143,704.80 and 45,979.20

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Solution

The fourth proportional to 95,875.20, 143,704.80 and 45,979.20 is: 68,917.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,875.20 : 143,704.80 = 45,979.20 : x
  2. Step 2: Convert to fraction form
    95,875.20/143,704.80 = 45,979.20/x
  3. Step 3: Cross multiply
    95,875.20x = 143,704.80 × 45,979.20
  4. Step 4: Simplify right side
    95,875.20x = 6,607,431,740.16
  5. Step 5: Solve for x
    x = 6,607,431,740.16/95,875.20
  6. Step 6: Final answer
    x = 68,917.01

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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.