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Finding the Fourth Proportional to 86,959.44, 119,941.92 and 79,812.54

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Solution

The fourth proportional to 86,959.44, 119,941.92 and 79,812.54 is: 110,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,959.44 : 119,941.92 = 79,812.54 : x
  2. Step 2: Convert to fraction form
    86,959.44/119,941.92 = 79,812.54/x
  3. Step 3: Cross multiply
    86,959.44x = 119,941.92 × 79,812.54
  4. Step 4: Simplify right side
    86,959.44x = 9,572,869,287.68
  5. Step 5: Solve for x
    x = 9,572,869,287.68/86,959.44
  6. Step 6: Final answer
    x = 110,084.30

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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.