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Finding the Fourth Proportional to 86,048.82, 118,699.56 and 79,959.92

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Solution

The fourth proportional to 86,048.82, 118,699.56 and 79,959.92 is: 110,300.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,048.82 : 118,699.56 = 79,959.92 : x
  2. Step 2: Convert to fraction form
    86,048.82/118,699.56 = 79,959.92/x
  3. Step 3: Cross multiply
    86,048.82x = 118,699.56 × 79,959.92
  4. Step 4: Simplify right side
    86,048.82x = 9,491,206,728.14
  5. Step 5: Solve for x
    x = 9,491,206,728.14/86,048.82
  6. Step 6: Final answer
    x = 110,300.25

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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.