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Finding the Fourth Proportional to 57,399.96, 86,070.78 and 25,805.28

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Solution

The fourth proportional to 57,399.96, 86,070.78 and 25,805.28 is: 38,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,399.96 : 86,070.78 = 25,805.28 : x
  2. Step 2: Convert to fraction form
    57,399.96/86,070.78 = 25,805.28/x
  3. Step 3: Cross multiply
    57,399.96x = 86,070.78 × 25,805.28
  4. Step 4: Simplify right side
    57,399.96x = 2,221,080,577.72
  5. Step 5: Solve for x
    x = 2,221,080,577.72/57,399.96
  6. Step 6: Final answer
    x = 38,694.81

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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.