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Finding the Fourth Proportional to 71,325.48, 106,993.08 and 18,734.88

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Solution

The fourth proportional to 71,325.48, 106,993.08 and 18,734.88 is: 28,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,325.48 : 106,993.08 = 18,734.88 : x
  2. Step 2: Convert to fraction form
    71,325.48/106,993.08 = 18,734.88/x
  3. Step 3: Cross multiply
    71,325.48x = 106,993.08 × 18,734.88
  4. Step 4: Simplify right side
    71,325.48x = 2,004,502,514.63
  5. Step 5: Solve for x
    x = 2,004,502,514.63/71,325.48
  6. Step 6: Final answer
    x = 28,103.60

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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.