Home / 72,198.36-99,635.94-40,372.92

Finding the Fourth Proportional to 72,198.36, 99,635.94 and 40,372.92

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Solution

The fourth proportional to 72,198.36, 99,635.94 and 40,372.92 is: 55,715.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,198.36 : 99,635.94 = 40,372.92 : x
  2. Step 2: Convert to fraction form
    72,198.36/99,635.94 = 40,372.92/x
  3. Step 3: Cross multiply
    72,198.36x = 99,635.94 × 40,372.92
  4. Step 4: Simplify right side
    72,198.36x = 4,022,593,834.74
  5. Step 5: Solve for x
    x = 4,022,593,834.74/72,198.36
  6. Step 6: Final answer
    x = 55,715.86

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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.