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Finding the Fourth Proportional to 75,487.15, 113,230.32 and 19,327.15

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Solution

The fourth proportional to 75,487.15, 113,230.32 and 19,327.15 is: 28,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,487.15 : 113,230.32 = 19,327.15 : x
  2. Step 2: Convert to fraction form
    75,487.15/113,230.32 = 19,327.15/x
  3. Step 3: Cross multiply
    75,487.15x = 113,230.32 × 19,327.15
  4. Step 4: Simplify right side
    75,487.15x = 2,188,419,379.19
  5. Step 5: Solve for x
    x = 2,188,419,379.19/75,487.15
  6. Step 6: Final answer
    x = 28,990.62

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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.