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Finding the Fourth Proportional to 65,885.92, 90,860.32 and 43,244.54

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Solution

The fourth proportional to 65,885.92, 90,860.32 and 43,244.54 is: 59,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,885.92 : 90,860.32 = 43,244.54 : x
  2. Step 2: Convert to fraction form
    65,885.92/90,860.32 = 43,244.54/x
  3. Step 3: Cross multiply
    65,885.92x = 90,860.32 × 43,244.54
  4. Step 4: Simplify right side
    65,885.92x = 3,929,212,742.65
  5. Step 5: Solve for x
    x = 3,929,212,742.65/65,885.92
  6. Step 6: Final answer
    x = 59,636.61

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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.