Home / 83,427.21-125,139.75-20,247.86

Finding the Fourth Proportional to 83,427.21, 125,139.75 and 20,247.86

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Solution

The fourth proportional to 83,427.21, 125,139.75 and 20,247.86 is: 30,371.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,427.21 : 125,139.75 = 20,247.86 : x
  2. Step 2: Convert to fraction form
    83,427.21/125,139.75 = 20,247.86/x
  3. Step 3: Cross multiply
    83,427.21x = 125,139.75 × 20,247.86
  4. Step 4: Simplify right side
    83,427.21x = 2,533,811,512.74
  5. Step 5: Solve for x
    x = 2,533,811,512.74/83,427.21
  6. Step 6: Final answer
    x = 30,371.52

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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.