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Finding the Fourth Proportional to 78,808.62, 118,212.92 and 33,820.22

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Solution

The fourth proportional to 78,808.62, 118,212.92 and 33,820.22 is: 50,730.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.62 : 118,212.92 = 33,820.22 : x
  2. Step 2: Convert to fraction form
    78,808.62/118,212.92 = 33,820.22/x
  3. Step 3: Cross multiply
    78,808.62x = 118,212.92 × 33,820.22
  4. Step 4: Simplify right side
    78,808.62x = 3,997,986,961.24
  5. Step 5: Solve for x
    x = 3,997,986,961.24/78,808.62
  6. Step 6: Final answer
    x = 50,730.33

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1.5x scale

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.