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Finding the Fourth Proportional to 79,661.48, 119,492.01 and 20,492.19

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Solution

The fourth proportional to 79,661.48, 119,492.01 and 20,492.19 is: 30,738.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.48 : 119,492.01 = 20,492.19 : x
  2. Step 2: Convert to fraction form
    79,661.48/119,492.01 = 20,492.19/x
  3. Step 3: Cross multiply
    79,661.48x = 119,492.01 × 20,492.19
  4. Step 4: Simplify right side
    79,661.48x = 2,448,652,972.40
  5. Step 5: Solve for x
    x = 2,448,652,972.40/79,661.48
  6. Step 6: Final answer
    x = 30,738.23

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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.