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Finding the Fourth Proportional to 79,713.21, 119,577.15 and 20,549.10

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Solution

The fourth proportional to 79,713.21, 119,577.15 and 20,549.10 is: 30,825.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,713.21 : 119,577.15 = 20,549.10 : x
  2. Step 2: Convert to fraction form
    79,713.21/119,577.15 = 20,549.10/x
  3. Step 3: Cross multiply
    79,713.21x = 119,577.15 × 20,549.10
  4. Step 4: Simplify right side
    79,713.21x = 2,457,202,813.07
  5. Step 5: Solve for x
    x = 2,457,202,813.07/79,713.21
  6. Step 6: Final answer
    x = 30,825.54

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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.