Home / 71,999.10-99,358.38-40,167.92

Finding the Fourth Proportional to 71,999.10, 99,358.38 and 40,167.92

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Solution

The fourth proportional to 71,999.10, 99,358.38 and 40,167.92 is: 55,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,999.10 : 99,358.38 = 40,167.92 : x
  2. Step 2: Convert to fraction form
    71,999.10/99,358.38 = 40,167.92/x
  3. Step 3: Cross multiply
    71,999.10x = 99,358.38 × 40,167.92
  4. Step 4: Simplify right side
    71,999.10x = 3,991,019,707.57
  5. Step 5: Solve for x
    x = 3,991,019,707.57/71,999.10
  6. Step 6: Final answer
    x = 55,431.52

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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.