Home / 40,036.78-55,250.35-22,130.92

Finding the Fourth Proportional to 40,036.78, 55,250.35 and 22,130.92

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Solution

The fourth proportional to 40,036.78, 55,250.35 and 22,130.92 is: 30,540.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,036.78 : 55,250.35 = 22,130.92 : x
  2. Step 2: Convert to fraction form
    40,036.78/55,250.35 = 22,130.92/x
  3. Step 3: Cross multiply
    40,036.78x = 55,250.35 × 22,130.92
  4. Step 4: Simplify right side
    40,036.78x = 1,222,741,214.04
  5. Step 5: Solve for x
    x = 1,222,741,214.04/40,036.78
  6. Step 6: Final answer
    x = 30,540.45

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Half scale
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Double scale
Find fourth proportional to 40,037.78, 55,251.73 and 22,131.92
Similar ratio
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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.