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Finding the Fourth Proportional to 78,761.73, 118,142.34 and 19,597.39

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Solution

The fourth proportional to 78,761.73, 118,142.34 and 19,597.39 is: 29,396.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.73 : 118,142.34 = 19,597.39 : x
  2. Step 2: Convert to fraction form
    78,761.73/118,142.34 = 19,597.39/x
  3. Step 3: Cross multiply
    78,761.73x = 118,142.34 × 19,597.39
  4. Step 4: Simplify right side
    78,761.73x = 2,315,281,512.49
  5. Step 5: Solve for x
    x = 2,315,281,512.49/78,761.73
  6. Step 6: Final answer
    x = 29,396.02

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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.