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Finding the Fourth Proportional to 79,481.89, 119,224.05 and 20,316.25

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Solution

The fourth proportional to 79,481.89, 119,224.05 and 20,316.25 is: 30,474.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,481.89 : 119,224.05 = 20,316.25 : x
  2. Step 2: Convert to fraction form
    79,481.89/119,224.05 = 20,316.25/x
  3. Step 3: Cross multiply
    79,481.89x = 119,224.05 × 20,316.25
  4. Step 4: Simplify right side
    79,481.89x = 2,422,184,908.11
  5. Step 5: Solve for x
    x = 2,422,184,908.11/79,481.89
  6. Step 6: Final answer
    x = 30,474.68

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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.