Home / 71,580.15-107,370.11-18,272.12

Finding the Fourth Proportional to 71,580.15, 107,370.11 and 18,272.12

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Solution

The fourth proportional to 71,580.15, 107,370.11 and 18,272.12 is: 27,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,580.15 : 107,370.11 = 18,272.12 : x
  2. Step 2: Convert to fraction form
    71,580.15/107,370.11 = 18,272.12/x
  3. Step 3: Cross multiply
    71,580.15x = 107,370.11 × 18,272.12
  4. Step 4: Simplify right side
    71,580.15x = 1,961,879,757.08
  5. Step 5: Solve for x
    x = 1,961,879,757.08/71,580.15
  6. Step 6: Final answer
    x = 27,408.15

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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.