Home / 71,839.80-99,127.26-40,002.75

Finding the Fourth Proportional to 71,839.80, 99,127.26 and 40,002.75

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Solution

The fourth proportional to 71,839.80, 99,127.26 and 40,002.75 is: 55,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,839.80 : 99,127.26 = 40,002.75 : x
  2. Step 2: Convert to fraction form
    71,839.80/99,127.26 = 40,002.75/x
  3. Step 3: Cross multiply
    71,839.80x = 99,127.26 × 40,002.75
  4. Step 4: Simplify right side
    71,839.80x = 3,965,362,999.97
  5. Step 5: Solve for x
    x = 3,965,362,999.97/71,839.80
  6. Step 6: Final answer
    x = 55,197.30

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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.