Home / 72,847.13-109,271.39-20,260.71

Finding the Fourth Proportional to 72,847.13, 109,271.39 and 20,260.71

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Solution

The fourth proportional to 72,847.13, 109,271.39 and 20,260.71 is: 30,391.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,847.13 : 109,271.39 = 20,260.71 : x
  2. Step 2: Convert to fraction form
    72,847.13/109,271.39 = 20,260.71/x
  3. Step 3: Cross multiply
    72,847.13x = 109,271.39 × 20,260.71
  4. Step 4: Simplify right side
    72,847.13x = 2,213,915,842.78
  5. Step 5: Solve for x
    x = 2,213,915,842.78/72,847.13
  6. Step 6: Final answer
    x = 30,391.26

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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.