Home / 54,538.07-81,781.22-18,987.01

Finding the Fourth Proportional to 54,538.07, 81,781.22 and 18,987.01

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Solution

The fourth proportional to 54,538.07, 81,781.22 and 18,987.01 is: 28,471.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,538.07 : 81,781.22 = 18,987.01 : x
  2. Step 2: Convert to fraction form
    54,538.07/81,781.22 = 18,987.01/x
  3. Step 3: Cross multiply
    54,538.07x = 81,781.22 × 18,987.01
  4. Step 4: Simplify right side
    54,538.07x = 1,552,780,684.97
  5. Step 5: Solve for x
    x = 1,552,780,684.97/54,538.07
  6. Step 6: Final answer
    x = 28,471.50

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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.