Home / 45,958.49-68,878.14-20,639.31

Finding the Fourth Proportional to 45,958.49, 68,878.14 and 20,639.31

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Solution

The fourth proportional to 45,958.49, 68,878.14 and 20,639.31 is: 30,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,958.49 : 68,878.14 = 20,639.31 : x
  2. Step 2: Convert to fraction form
    45,958.49/68,878.14 = 20,639.31/x
  3. Step 3: Cross multiply
    45,958.49x = 68,878.14 × 20,639.31
  4. Step 4: Simplify right side
    45,958.49x = 1,421,597,283.68
  5. Step 5: Solve for x
    x = 1,421,597,283.68/45,958.49
  6. Step 6: Final answer
    x = 30,932.20

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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.