Home / 71,999.15-99,356.91-40,167.23

Finding the Fourth Proportional to 71,999.15, 99,356.91 and 40,167.23

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Solution

The fourth proportional to 71,999.15, 99,356.91 and 40,167.23 is: 55,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,999.15 : 99,356.91 = 40,167.23 : x
  2. Step 2: Convert to fraction form
    71,999.15/99,356.91 = 40,167.23/x
  3. Step 3: Cross multiply
    71,999.15x = 99,356.91 × 40,167.23
  4. Step 4: Simplify right side
    71,999.15x = 3,990,891,856.06
  5. Step 5: Solve for x
    x = 3,990,891,856.06/71,999.15
  6. Step 6: Final answer
    x = 55,429.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.