Home / 72,029.58-99,400.89-40,198.47

Finding the Fourth Proportional to 72,029.58, 99,400.89 and 40,198.47

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Solution

The fourth proportional to 72,029.58, 99,400.89 and 40,198.47 is: 55,473.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,029.58 : 99,400.89 = 40,198.47 : x
  2. Step 2: Convert to fraction form
    72,029.58/99,400.89 = 40,198.47/x
  3. Step 3: Cross multiply
    72,029.58x = 99,400.89 × 40,198.47
  4. Step 4: Simplify right side
    72,029.58x = 3,995,763,694.64
  5. Step 5: Solve for x
    x = 3,995,763,694.64/72,029.58
  6. Step 6: Final answer
    x = 55,473.93

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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.