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Finding the Fourth Proportional to 82,801.80, 124,202.70 and 20,472.30

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Solution

The fourth proportional to 82,801.80, 124,202.70 and 20,472.30 is: 30,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,801.80 : 124,202.70 = 20,472.30 : x
  2. Step 2: Convert to fraction form
    82,801.80/124,202.70 = 20,472.30/x
  3. Step 3: Cross multiply
    82,801.80x = 124,202.70 × 20,472.30
  4. Step 4: Simplify right side
    82,801.80x = 2,542,714,935.21
  5. Step 5: Solve for x
    x = 2,542,714,935.21/82,801.80
  6. Step 6: Final answer
    x = 30,708.45

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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.