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Finding the Fourth Proportional to 88,657.60, 133,083.60 and 55,415.20

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Solution

The fourth proportional to 88,657.60, 133,083.60 and 55,415.20 is: 83,183.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,657.60 : 133,083.60 = 55,415.20 : x
  2. Step 2: Convert to fraction form
    88,657.60/133,083.60 = 55,415.20/x
  3. Step 3: Cross multiply
    88,657.60x = 133,083.60 × 55,415.20
  4. Step 4: Simplify right side
    88,657.60x = 7,374,854,310.72
  5. Step 5: Solve for x
    x = 7,374,854,310.72/88,657.60
  6. Step 6: Final answer
    x = 83,183.55

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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.