Home / 40,192.08-55,453.76-31,667.78

Finding the Fourth Proportional to 40,192.08, 55,453.76 and 31,667.78

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Solution

The fourth proportional to 40,192.08, 55,453.76 and 31,667.78 is: 43,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,192.08 : 55,453.76 = 31,667.78 : x
  2. Step 2: Convert to fraction form
    40,192.08/55,453.76 = 31,667.78/x
  3. Step 3: Cross multiply
    40,192.08x = 55,453.76 × 31,667.78
  4. Step 4: Simplify right side
    40,192.08x = 1,756,097,036.25
  5. Step 5: Solve for x
    x = 1,756,097,036.25/40,192.08
  6. Step 6: Final answer
    x = 43,692.61

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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.