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Finding the Fourth Proportional to 85,873.62, 118,481.34 and 55,660.21

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Solution

The fourth proportional to 85,873.62, 118,481.34 and 55,660.21 is: 76,795.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,873.62 : 118,481.34 = 55,660.21 : x
  2. Step 2: Convert to fraction form
    85,873.62/118,481.34 = 55,660.21/x
  3. Step 3: Cross multiply
    85,873.62x = 118,481.34 × 55,660.21
  4. Step 4: Simplify right side
    85,873.62x = 6,594,696,265.48
  5. Step 5: Solve for x
    x = 6,594,696,265.48/85,873.62
  6. Step 6: Final answer
    x = 76,795.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.