Home / 54,259.47-81,393.11-18,720.27

Finding the Fourth Proportional to 54,259.47, 81,393.11 and 18,720.27

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Solution

The fourth proportional to 54,259.47, 81,393.11 and 18,720.27 is: 28,081.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,259.47 : 81,393.11 = 18,720.27 : x
  2. Step 2: Convert to fraction form
    54,259.47/81,393.11 = 18,720.27/x
  3. Step 3: Cross multiply
    54,259.47x = 81,393.11 × 18,720.27
  4. Step 4: Simplify right side
    54,259.47x = 1,523,700,995.34
  5. Step 5: Solve for x
    x = 1,523,700,995.34/54,259.47
  6. Step 6: Final answer
    x = 28,081.75

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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.