Home / 54,619.71-75,374.42-30,420.51

Finding the Fourth Proportional to 54,619.71, 75,374.42 and 30,420.51

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Solution

The fourth proportional to 54,619.71, 75,374.42 and 30,420.51 is: 41,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,619.71 : 75,374.42 = 30,420.51 : x
  2. Step 2: Convert to fraction form
    54,619.71/75,374.42 = 30,420.51/x
  3. Step 3: Cross multiply
    54,619.71x = 75,374.42 × 30,420.51
  4. Step 4: Simplify right side
    54,619.71x = 2,292,928,145.25
  5. Step 5: Solve for x
    x = 2,292,928,145.25/54,619.71
  6. Step 6: Final answer
    x = 41,979.87

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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.