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Finding the Fourth Proportional to 71,698.60, 107,562.27 and 40,153.54

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Solution

The fourth proportional to 71,698.60, 107,562.27 and 40,153.54 is: 60,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,698.60 : 107,562.27 = 40,153.54 : x
  2. Step 2: Convert to fraction form
    71,698.60/107,562.27 = 40,153.54/x
  3. Step 3: Cross multiply
    71,698.60x = 107,562.27 × 40,153.54
  4. Step 4: Simplify right side
    71,698.60x = 4,319,005,910.94
  5. Step 5: Solve for x
    x = 4,319,005,910.94/71,698.60
  6. Step 6: Final answer
    x = 60,238.36

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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.