Home / 82,820.28-124,228.96-20,490.76

Finding the Fourth Proportional to 82,820.28, 124,228.96 and 20,490.76

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Solution

The fourth proportional to 82,820.28, 124,228.96 and 20,490.76 is: 30,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,820.28 : 124,228.96 = 20,490.76 : x
  2. Step 2: Convert to fraction form
    82,820.28/124,228.96 = 20,490.76/x
  3. Step 3: Cross multiply
    82,820.28x = 124,228.96 × 20,490.76
  4. Step 4: Simplify right side
    82,820.28x = 2,545,545,804.41
  5. Step 5: Solve for x
    x = 2,545,545,804.41/82,820.28
  6. Step 6: Final answer
    x = 30,735.78

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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.