Home / 83,782.09-125,672.03-20,602.76

Finding the Fourth Proportional to 83,782.09, 125,672.03 and 20,602.76

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Solution

The fourth proportional to 83,782.09, 125,672.03 and 20,602.76 is: 30,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,782.09 : 125,672.03 = 20,602.76 : x
  2. Step 2: Convert to fraction form
    83,782.09/125,672.03 = 20,602.76/x
  3. Step 3: Cross multiply
    83,782.09x = 125,672.03 × 20,602.76
  4. Step 4: Simplify right side
    83,782.09x = 2,589,189,941.43
  5. Step 5: Solve for x
    x = 2,589,189,941.43/83,782.09
  6. Step 6: Final answer
    x = 30,903.86

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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.