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Finding the Fourth Proportional to 78,896.70, 118,308.60 and 34,500.60

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Solution

The fourth proportional to 78,896.70, 118,308.60 and 34,500.60 is: 51,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,896.70 : 118,308.60 = 34,500.60 : x
  2. Step 2: Convert to fraction form
    78,896.70/118,308.60 = 34,500.60/x
  3. Step 3: Cross multiply
    78,896.70x = 118,308.60 × 34,500.60
  4. Step 4: Simplify right side
    78,896.70x = 4,081,717,685.16
  5. Step 5: Solve for x
    x = 4,081,717,685.16/78,896.70
  6. Step 6: Final answer
    x = 51,734.96

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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.