Home / 81,943.35-122,921.65-22,779.02

Finding the Fourth Proportional to 81,943.35, 122,921.65 and 22,779.02

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Solution

The fourth proportional to 81,943.35, 122,921.65 and 22,779.02 is: 34,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,943.35 : 122,921.65 = 22,779.02 : x
  2. Step 2: Convert to fraction form
    81,943.35/122,921.65 = 22,779.02/x
  3. Step 3: Cross multiply
    81,943.35x = 122,921.65 × 22,779.02
  4. Step 4: Simplify right side
    81,943.35x = 2,800,035,059.56
  5. Step 5: Solve for x
    x = 2,800,035,059.56/81,943.35
  6. Step 6: Final answer
    x = 34,170.38

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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.