Home / 40,170,235.05-55,434,960.09-21,835,520.55

Finding the Fourth Proportional to 40,170,235.05, 55,434,960.09 and 21,835,520.55

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Solution

The fourth proportional to 40,170,235.05, 55,434,960.09 and 21,835,520.55 is: 30,133,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,170,235.05 : 55,434,960.09 = 21,835,520.55 : x
  2. Step 2: Convert to fraction form
    40,170,235.05/55,434,960.09 = 21,835,520.55/x
  3. Step 3: Cross multiply
    40,170,235.05x = 55,434,960.09 × 21,835,520.55
  4. Step 4: Simplify right side
    40,170,235.05x = 1,210,451,210,233,625
  5. Step 5: Solve for x
    x = 1,210,451,210,233,625/40,170,235.05
  6. Step 6: Final answer
    x = 30,133,037.78

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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.