Home / 47,986.20-71,979.30-45,394.20

Finding the Fourth Proportional to 47,986.20, 71,979.30 and 45,394.20

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Solution

The fourth proportional to 47,986.20, 71,979.30 and 45,394.20 is: 68,091.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,986.20 : 71,979.30 = 45,394.20 : x
  2. Step 2: Convert to fraction form
    47,986.20/71,979.30 = 45,394.20/x
  3. Step 3: Cross multiply
    47,986.20x = 71,979.30 × 45,394.20
  4. Step 4: Simplify right side
    47,986.20x = 3,267,442,740.06
  5. Step 5: Solve for x
    x = 3,267,442,740.06/47,986.20
  6. Step 6: Final answer
    x = 68,091.30

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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.