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Finding the Fourth Proportional to 70,704.80, 106,054.80 and 18,114.80

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Solution

The fourth proportional to 70,704.80, 106,054.80 and 18,114.80 is: 27,171.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,704.80 : 106,054.80 = 18,114.80 : x
  2. Step 2: Convert to fraction form
    70,704.80/106,054.80 = 18,114.80/x
  3. Step 3: Cross multiply
    70,704.80x = 106,054.80 × 18,114.80
  4. Step 4: Simplify right side
    70,704.80x = 1,921,161,491.04
  5. Step 5: Solve for x
    x = 1,921,161,491.04/70,704.80
  6. Step 6: Final answer
    x = 27,171.59

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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.