Home / 54,154.14-81,222.84-20,889.78

Finding the Fourth Proportional to 54,154.14, 81,222.84 and 20,889.78

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Solution

The fourth proportional to 54,154.14, 81,222.84 and 20,889.78 is: 31,331.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,154.14 : 81,222.84 = 20,889.78 : x
  2. Step 2: Convert to fraction form
    54,154.14/81,222.84 = 20,889.78/x
  3. Step 3: Cross multiply
    54,154.14x = 81,222.84 × 20,889.78
  4. Step 4: Simplify right side
    54,154.14x = 1,696,727,258.58
  5. Step 5: Solve for x
    x = 1,696,727,258.58/54,154.14
  6. Step 6: Final answer
    x = 31,331.44

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1.5x scale

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.