Home / 54,139.56-81,218.10-16,690.88

Finding the Fourth Proportional to 54,139.56, 81,218.10 and 16,690.88

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Solution

The fourth proportional to 54,139.56, 81,218.10 and 16,690.88 is: 25,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,139.56 : 81,218.10 = 16,690.88 : x
  2. Step 2: Convert to fraction form
    54,139.56/81,218.10 = 16,690.88/x
  3. Step 3: Cross multiply
    54,139.56x = 81,218.10 × 16,690.88
  4. Step 4: Simplify right side
    54,139.56x = 1,355,601,154.84
  5. Step 5: Solve for x
    x = 1,355,601,154.84/54,139.56
  6. Step 6: Final answer
    x = 25,039.01

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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.