Home / 57,761.28-86,603.52-20,820.48

Finding the Fourth Proportional to 57,761.28, 86,603.52 and 20,820.48

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Solution

The fourth proportional to 57,761.28, 86,603.52 and 20,820.48 is: 31,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,761.28 : 86,603.52 = 20,820.48 : x
  2. Step 2: Convert to fraction form
    57,761.28/86,603.52 = 20,820.48/x
  3. Step 3: Cross multiply
    57,761.28x = 86,603.52 × 20,820.48
  4. Step 4: Simplify right side
    57,761.28x = 1,803,126,856.09
  5. Step 5: Solve for x
    x = 1,803,126,856.09/57,761.28
  6. Step 6: Final answer
    x = 31,216.88

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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.