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Finding the Fourth Proportional to 86,906.25, 119,930.63 and 47,162.25

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Solution

The fourth proportional to 86,906.25, 119,930.63 and 47,162.25 is: 65,083.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,906.25 : 119,930.63 = 47,162.25 : x
  2. Step 2: Convert to fraction form
    86,906.25/119,930.63 = 47,162.25/x
  3. Step 3: Cross multiply
    86,906.25x = 119,930.63 × 47,162.25
  4. Step 4: Simplify right side
    86,906.25x = 5,656,198,354.72
  5. Step 5: Solve for x
    x = 5,656,198,354.72/86,906.25
  6. Step 6: Final answer
    x = 65,083.91

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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.