Home / 45,371.31-68,033.53-20,390.01

Finding the Fourth Proportional to 45,371.31, 68,033.53 and 20,390.01

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Solution

The fourth proportional to 45,371.31, 68,033.53 and 20,390.01 is: 30,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371.31 : 68,033.53 = 20,390.01 : x
  2. Step 2: Convert to fraction form
    45,371.31/68,033.53 = 20,390.01/x
  3. Step 3: Cross multiply
    45,371.31x = 68,033.53 × 20,390.01
  4. Step 4: Simplify right side
    45,371.31x = 1,387,204,357.04
  5. Step 5: Solve for x
    x = 1,387,204,357.04/45,371.31
  6. Step 6: Final answer
    x = 30,574.48

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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.