Home / 71,620.20-107,430.30-40,516.20

Finding the Fourth Proportional to 71,620.20, 107,430.30 and 40,516.20

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Solution

The fourth proportional to 71,620.20, 107,430.30 and 40,516.20 is: 60,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,620.20 : 107,430.30 = 40,516.20 : x
  2. Step 2: Convert to fraction form
    71,620.20/107,430.30 = 40,516.20/x
  3. Step 3: Cross multiply
    71,620.20x = 107,430.30 × 40,516.20
  4. Step 4: Simplify right side
    71,620.20x = 4,352,667,520.86
  5. Step 5: Solve for x
    x = 4,352,667,520.86/71,620.20
  6. Step 6: Final answer
    x = 60,774.30

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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.