Home / 83,699.31-125,549.18-20,519.72

Finding the Fourth Proportional to 83,699.31, 125,549.18 and 20,519.72

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Solution

The fourth proportional to 83,699.31, 125,549.18 and 20,519.72 is: 30,779.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,699.31 : 125,549.18 = 20,519.72 : x
  2. Step 2: Convert to fraction form
    83,699.31/125,549.18 = 20,519.72/x
  3. Step 3: Cross multiply
    83,699.31x = 125,549.18 × 20,519.72
  4. Step 4: Simplify right side
    83,699.31x = 2,576,233,289.49
  5. Step 5: Solve for x
    x = 2,576,233,289.49/83,699.31
  6. Step 6: Final answer
    x = 30,779.62

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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.