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Finding the Fourth Proportional to 71,847.87, 99,153.12 and 40,016.77

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Solution

The fourth proportional to 71,847.87, 99,153.12 and 40,016.77 is: 55,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,847.87 : 99,153.12 = 40,016.77 : x
  2. Step 2: Convert to fraction form
    71,847.87/99,153.12 = 40,016.77/x
  3. Step 3: Cross multiply
    71,847.87x = 99,153.12 × 40,016.77
  4. Step 4: Simplify right side
    71,847.87x = 3,967,787,597.82
  5. Step 5: Solve for x
    x = 3,967,787,597.82/71,847.87
  6. Step 6: Final answer
    x = 55,224.85

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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.