Home / 71,972.98-99,322.85-40,143.94

Finding the Fourth Proportional to 71,972.98, 99,322.85 and 40,143.94

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Solution

The fourth proportional to 71,972.98, 99,322.85 and 40,143.94 is: 55,398.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,972.98 : 99,322.85 = 40,143.94 : x
  2. Step 2: Convert to fraction form
    71,972.98/99,322.85 = 40,143.94/x
  3. Step 3: Cross multiply
    71,972.98x = 99,322.85 × 40,143.94
  4. Step 4: Simplify right side
    71,972.98x = 3,987,210,383.08
  5. Step 5: Solve for x
    x = 3,987,210,383.08/71,972.98
  6. Step 6: Final answer
    x = 55,398.71

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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.