Home / 72,297.72-99,772.97-40,465.80

Finding the Fourth Proportional to 72,297.72, 99,772.97 and 40,465.80

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Solution

The fourth proportional to 72,297.72, 99,772.97 and 40,465.80 is: 55,843.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,297.72 : 99,772.97 = 40,465.80 : x
  2. Step 2: Convert to fraction form
    72,297.72/99,772.97 = 40,465.80/x
  3. Step 3: Cross multiply
    72,297.72x = 99,772.97 × 40,465.80
  4. Step 4: Simplify right side
    72,297.72x = 4,037,393,049.43
  5. Step 5: Solve for x
    x = 4,037,393,049.43/72,297.72
  6. Step 6: Final answer
    x = 55,843.99

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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.