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Finding the Fourth Proportional to 86,148, 118,891.53 and 48,429.54

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Solution

The fourth proportional to 86,148, 118,891.53 and 48,429.54 is: 66,836.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,148 : 118,891.53 = 48,429.54 : x
  2. Step 2: Convert to fraction form
    86,148/118,891.53 = 48,429.54/x
  3. Step 3: Cross multiply
    86,148x = 118,891.53 × 48,429.54
  4. Step 4: Simplify right side
    86,148x = 5,757,862,107.80
  5. Step 5: Solve for x
    x = 5,757,862,107.80/86,148
  6. Step 6: Final answer
    x = 66,836.86

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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.