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Finding the Fourth Proportional to 79,409.52, 119,110.98 and 20,246.64

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Solution

The fourth proportional to 79,409.52, 119,110.98 and 20,246.64 is: 30,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,409.52 : 119,110.98 = 20,246.64 : x
  2. Step 2: Convert to fraction form
    79,409.52/119,110.98 = 20,246.64/x
  3. Step 3: Cross multiply
    79,409.52x = 119,110.98 × 20,246.64
  4. Step 4: Simplify right side
    79,409.52x = 2,411,597,132.11
  5. Step 5: Solve for x
    x = 2,411,597,132.11/79,409.52
  6. Step 6: Final answer
    x = 30,369.12

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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.