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Finding the Fourth Proportional to 79,153.60, 118,761.72 and 34,749.40

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Solution

The fourth proportional to 79,153.60, 118,761.72 and 34,749.40 is: 52,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,153.60 : 118,761.72 = 34,749.40 : x
  2. Step 2: Convert to fraction form
    79,153.60/118,761.72 = 34,749.40/x
  3. Step 3: Cross multiply
    79,153.60x = 118,761.72 × 34,749.40
  4. Step 4: Simplify right side
    79,153.60x = 4,126,898,512.97
  5. Step 5: Solve for x
    x = 4,126,898,512.97/79,153.60
  6. Step 6: Final answer
    x = 52,137.85

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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.