Home / 81,277.48-121,919.40-25,112.59

Finding the Fourth Proportional to 81,277.48, 121,919.40 and 25,112.59

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Solution

The fourth proportional to 81,277.48, 121,919.40 and 25,112.59 is: 37,669.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.48 : 121,919.40 = 25,112.59 : x
  2. Step 2: Convert to fraction form
    81,277.48/121,919.40 = 25,112.59/x
  3. Step 3: Cross multiply
    81,277.48x = 121,919.40 × 25,112.59
  4. Step 4: Simplify right side
    81,277.48x = 3,061,711,905.25
  5. Step 5: Solve for x
    x = 3,061,711,905.25/81,277.48
  6. Step 6: Final answer
    x = 37,669.87

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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.