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Finding the Fourth Proportional to 86,116.70, 118,834.31 and 47,873.92

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Solution

The fourth proportional to 86,116.70, 118,834.31 and 47,873.92 is: 66,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,116.70 : 118,834.31 = 47,873.92 : x
  2. Step 2: Convert to fraction form
    86,116.70/118,834.31 = 47,873.92/x
  3. Step 3: Cross multiply
    86,116.70x = 118,834.31 × 47,873.92
  4. Step 4: Simplify right side
    86,116.70x = 5,689,063,783.14
  5. Step 5: Solve for x
    x = 5,689,063,783.14/86,116.70
  6. Step 6: Final answer
    x = 66,062.26

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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.