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Finding the Fourth Proportional to 79,138.70, 118,708.05 and 23,734.70

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Solution

The fourth proportional to 79,138.70, 118,708.05 and 23,734.70 is: 35,602.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,138.70 : 118,708.05 = 23,734.70 : x
  2. Step 2: Convert to fraction form
    79,138.70/118,708.05 = 23,734.70/x
  3. Step 3: Cross multiply
    79,138.70x = 118,708.05 × 23,734.70
  4. Step 4: Simplify right side
    79,138.70x = 2,817,499,954.34
  5. Step 5: Solve for x
    x = 2,817,499,954.34/79,138.70
  6. Step 6: Final answer
    x = 35,602.05

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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.