Home / 81,909.45-122,869.76-27,852.12

Finding the Fourth Proportional to 81,909.45, 122,869.76 and 27,852.12

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Solution

The fourth proportional to 81,909.45, 122,869.76 and 27,852.12 is: 41,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,909.45 : 122,869.76 = 27,852.12 : x
  2. Step 2: Convert to fraction form
    81,909.45/122,869.76 = 27,852.12/x
  3. Step 3: Cross multiply
    81,909.45x = 122,869.76 × 27,852.12
  4. Step 4: Simplify right side
    81,909.45x = 3,422,183,160.63
  5. Step 5: Solve for x
    x = 3,422,183,160.63/81,909.45
  6. Step 6: Final answer
    x = 41,780.08

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1.5x scale

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.