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Finding the Fourth Proportional to 79,263.25, 118,899.05 and 20,099.43

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Solution

The fourth proportional to 79,263.25, 118,899.05 and 20,099.43 is: 30,150.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,263.25 : 118,899.05 = 20,099.43 : x
  2. Step 2: Convert to fraction form
    79,263.25/118,899.05 = 20,099.43/x
  3. Step 3: Cross multiply
    79,263.25x = 118,899.05 × 20,099.43
  4. Step 4: Simplify right side
    79,263.25x = 2,389,803,182.79
  5. Step 5: Solve for x
    x = 2,389,803,182.79/79,263.25
  6. Step 6: Final answer
    x = 30,150.21

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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.