Home / 40,278.36-60,364.98-20,540.28

Finding the Fourth Proportional to 40,278.36, 60,364.98 and 20,540.28

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Solution

The fourth proportional to 40,278.36, 60,364.98 and 20,540.28 is: 30,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,278.36 : 60,364.98 = 20,540.28 : x
  2. Step 2: Convert to fraction form
    40,278.36/60,364.98 = 20,540.28/x
  3. Step 3: Cross multiply
    40,278.36x = 60,364.98 × 20,540.28
  4. Step 4: Simplify right side
    40,278.36x = 1,239,913,591.39
  5. Step 5: Solve for x
    x = 1,239,913,591.39/40,278.36
  6. Step 6: Final answer
    x = 30,783.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.