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Finding the Fourth Proportional to 78,908.64, 118,370.85 and 22,750.12

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Solution

The fourth proportional to 78,908.64, 118,370.85 and 22,750.12 is: 34,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,908.64 : 118,370.85 = 22,750.12 : x
  2. Step 2: Convert to fraction form
    78,908.64/118,370.85 = 22,750.12/x
  3. Step 3: Cross multiply
    78,908.64x = 118,370.85 × 22,750.12
  4. Step 4: Simplify right side
    78,908.64x = 2,692,951,042.00
  5. Step 5: Solve for x
    x = 2,692,951,042.00/78,908.64
  6. Step 6: Final answer
    x = 34,127.45

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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.