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Finding the Fourth Proportional to 79,102.60, 109,161.64 and 43,292.60

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Solution

The fourth proportional to 79,102.60, 109,161.64 and 43,292.60 is: 59,743.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,102.60 : 109,161.64 = 43,292.60 : x
  2. Step 2: Convert to fraction form
    79,102.60/109,161.64 = 43,292.60/x
  3. Step 3: Cross multiply
    79,102.60x = 109,161.64 × 43,292.60
  4. Step 4: Simplify right side
    79,102.60x = 4,725,891,215.86
  5. Step 5: Solve for x
    x = 4,725,891,215.86/79,102.60
  6. Step 6: Final answer
    x = 59,743.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.