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Finding the Fourth Proportional to 73,179.60, 109,702.85 and 26,421.54

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Solution

The fourth proportional to 73,179.60, 109,702.85 and 26,421.54 is: 39,608.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,179.60 : 109,702.85 = 26,421.54 : x
  2. Step 2: Convert to fraction form
    73,179.60/109,702.85 = 26,421.54/x
  3. Step 3: Cross multiply
    73,179.60x = 109,702.85 × 26,421.54
  4. Step 4: Simplify right side
    73,179.60x = 2,898,518,107.28
  5. Step 5: Solve for x
    x = 2,898,518,107.28/73,179.60
  6. Step 6: Final answer
    x = 39,608.28

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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.