Home / 81,259.78-121,902.65-25,086.68

Finding the Fourth Proportional to 81,259.78, 121,902.65 and 25,086.68

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Solution

The fourth proportional to 81,259.78, 121,902.65 and 25,086.68 is: 37,634.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,259.78 : 121,902.65 = 25,086.68 : x
  2. Step 2: Convert to fraction form
    81,259.78/121,902.65 = 25,086.68/x
  3. Step 3: Cross multiply
    81,259.78x = 121,902.65 × 25,086.68
  4. Step 4: Simplify right side
    81,259.78x = 3,058,132,646.27
  5. Step 5: Solve for x
    x = 3,058,132,646.27/81,259.78
  6. Step 6: Final answer
    x = 37,634.03

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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.