Home / 54,249.69-81,386.97-20,970.03

Finding the Fourth Proportional to 54,249.69, 81,386.97 and 20,970.03

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Solution

The fourth proportional to 54,249.69, 81,386.97 and 20,970.03 is: 31,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,249.69 : 81,386.97 = 20,970.03 : x
  2. Step 2: Convert to fraction form
    54,249.69/81,386.97 = 20,970.03/x
  3. Step 3: Cross multiply
    54,249.69x = 81,386.97 × 20,970.03
  4. Step 4: Simplify right side
    54,249.69x = 1,706,687,202.51
  5. Step 5: Solve for x
    x = 1,706,687,202.51/54,249.69
  6. Step 6: Final answer
    x = 31,459.85

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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.