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Finding the Fourth Proportional to 54,119.70, 81,165.15 and 16,679.70

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Solution

The fourth proportional to 54,119.70, 81,165.15 and 16,679.70 is: 25,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,119.70 : 81,165.15 = 16,679.70 : x
  2. Step 2: Convert to fraction form
    54,119.70/81,165.15 = 16,679.70/x
  3. Step 3: Cross multiply
    54,119.70x = 81,165.15 × 16,679.70
  4. Step 4: Simplify right side
    54,119.70x = 1,353,810,352.46
  5. Step 5: Solve for x
    x = 1,353,810,352.46/54,119.70
  6. Step 6: Final answer
    x = 25,015.11

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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.