Home / 82,760.38-124,140.84-20,430.88

Finding the Fourth Proportional to 82,760.38, 124,140.84 and 20,430.88

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Solution

The fourth proportional to 82,760.38, 124,140.84 and 20,430.88 is: 30,646.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,760.38 : 124,140.84 = 20,430.88 : x
  2. Step 2: Convert to fraction form
    82,760.38/124,140.84 = 20,430.88/x
  3. Step 3: Cross multiply
    82,760.38x = 124,140.84 × 20,430.88
  4. Step 4: Simplify right side
    82,760.38x = 2,536,306,605.14
  5. Step 5: Solve for x
    x = 2,536,306,605.14/82,760.38
  6. Step 6: Final answer
    x = 30,646.39

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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.