Home / 54,282.09-81,429.15-18,739.38

Finding the Fourth Proportional to 54,282.09, 81,429.15 and 18,739.38

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Solution

The fourth proportional to 54,282.09, 81,429.15 and 18,739.38 is: 28,111.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,282.09 : 81,429.15 = 18,739.38 : x
  2. Step 2: Convert to fraction form
    54,282.09/81,429.15 = 18,739.38/x
  3. Step 3: Cross multiply
    54,282.09x = 81,429.15 × 18,739.38
  4. Step 4: Simplify right side
    54,282.09x = 1,525,931,784.93
  5. Step 5: Solve for x
    x = 1,525,931,784.93/54,282.09
  6. Step 6: Final answer
    x = 28,111.15

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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.