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Finding the Fourth Proportional to 75,487.61, 113,231.07 and 19,327.61

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Solution

The fourth proportional to 75,487.61, 113,231.07 and 19,327.61 is: 28,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,487.61 : 113,231.07 = 19,327.61 : x
  2. Step 2: Convert to fraction form
    75,487.61/113,231.07 = 19,327.61/x
  3. Step 3: Cross multiply
    75,487.61x = 113,231.07 × 19,327.61
  4. Step 4: Simplify right side
    75,487.61x = 2,188,485,394.69
  5. Step 5: Solve for x
    x = 2,188,485,394.69/75,487.61
  6. Step 6: Final answer
    x = 28,991.32

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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.