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Finding the Fourth Proportional to 78,819.28, 118,248.72 and 22,659.49

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Solution

The fourth proportional to 78,819.28, 118,248.72 and 22,659.49 is: 33,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,819.28 : 118,248.72 = 22,659.49 : x
  2. Step 2: Convert to fraction form
    78,819.28/118,248.72 = 22,659.49/x
  3. Step 3: Cross multiply
    78,819.28x = 118,248.72 × 22,659.49
  4. Step 4: Simplify right side
    78,819.28x = 2,679,455,688.35
  5. Step 5: Solve for x
    x = 2,679,455,688.35/78,819.28
  6. Step 6: Final answer
    x = 33,994.93

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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.