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Finding the Fourth Proportional to 79,561.95, 119,334 and 20,399.01

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Solution

The fourth proportional to 79,561.95, 119,334 and 20,399.01 is: 30,596.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,561.95 : 119,334 = 20,399.01 : x
  2. Step 2: Convert to fraction form
    79,561.95/119,334 = 20,399.01/x
  3. Step 3: Cross multiply
    79,561.95x = 119,334 × 20,399.01
  4. Step 4: Simplify right side
    79,561.95x = 2,434,295,459.34
  5. Step 5: Solve for x
    x = 2,434,295,459.34/79,561.95
  6. Step 6: Final answer
    x = 30,596.23

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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.