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Finding the Fourth Proportional to 86,163.76, 118,916.70 and 48,438.04

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Solution

The fourth proportional to 86,163.76, 118,916.70 and 48,438.04 is: 66,850.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,163.76 : 118,916.70 = 48,438.04 : x
  2. Step 2: Convert to fraction form
    86,163.76/118,916.70 = 48,438.04/x
  3. Step 3: Cross multiply
    86,163.76x = 118,916.70 × 48,438.04
  4. Step 4: Simplify right side
    86,163.76x = 5,760,091,871.27
  5. Step 5: Solve for x
    x = 5,760,091,871.27/86,163.76
  6. Step 6: Final answer
    x = 66,850.52

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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.