Home / 81,176.78-121,759.40-25,011.05

Finding the Fourth Proportional to 81,176.78, 121,759.40 and 25,011.05

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Solution

The fourth proportional to 81,176.78, 121,759.40 and 25,011.05 is: 37,514.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,176.78 : 121,759.40 = 25,011.05 : x
  2. Step 2: Convert to fraction form
    81,176.78/121,759.40 = 25,011.05/x
  3. Step 3: Cross multiply
    81,176.78x = 121,759.40 × 25,011.05
  4. Step 4: Simplify right side
    81,176.78x = 3,045,330,922.45
  5. Step 5: Solve for x
    x = 3,045,330,922.45/81,176.78
  6. Step 6: Final answer
    x = 37,514.80

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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.