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Finding the Fourth Proportional to 86,035.52, 118,729.12 and 48,309.84

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Solution

The fourth proportional to 86,035.52, 118,729.12 and 48,309.84 is: 66,667.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,035.52 : 118,729.12 = 48,309.84 : x
  2. Step 2: Convert to fraction form
    86,035.52/118,729.12 = 48,309.84/x
  3. Step 3: Cross multiply
    86,035.52x = 118,729.12 × 48,309.84
  4. Step 4: Simplify right side
    86,035.52x = 5,735,784,790.54
  5. Step 5: Solve for x
    x = 5,735,784,790.54/86,035.52
  6. Step 6: Final answer
    x = 66,667.64

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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.