Home / 40,112.39-55,352.90-21,959.60

Finding the Fourth Proportional to 40,112.39, 55,352.90 and 21,959.60

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Solution

The fourth proportional to 40,112.39, 55,352.90 and 21,959.60 is: 30,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,112.39 : 55,352.90 = 21,959.60 : x
  2. Step 2: Convert to fraction form
    40,112.39/55,352.90 = 21,959.60/x
  3. Step 3: Cross multiply
    40,112.39x = 55,352.90 × 21,959.60
  4. Step 4: Simplify right side
    40,112.39x = 1,215,527,736.12
  5. Step 5: Solve for x
    x = 1,215,527,736.12/40,112.39
  6. Step 6: Final answer
    x = 30,303.05

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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.