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Finding the Fourth Proportional to 79,313.82, 118,973.97 and 20,151.02

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Solution

The fourth proportional to 79,313.82, 118,973.97 and 20,151.02 is: 30,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.82 : 118,973.97 = 20,151.02 : x
  2. Step 2: Convert to fraction form
    79,313.82/118,973.97 = 20,151.02/x
  3. Step 3: Cross multiply
    79,313.82x = 118,973.97 × 20,151.02
  4. Step 4: Simplify right side
    79,313.82x = 2,397,446,254.08
  5. Step 5: Solve for x
    x = 2,397,446,254.08/79,313.82
  6. Step 6: Final answer
    x = 30,227.35

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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.