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Finding the Fourth Proportional to 86,696.64, 119,181.78 and 74,552.58

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Solution

The fourth proportional to 86,696.64, 119,181.78 and 74,552.58 is: 102,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,696.64 : 119,181.78 = 74,552.58 : x
  2. Step 2: Convert to fraction form
    86,696.64/119,181.78 = 74,552.58/x
  3. Step 3: Cross multiply
    86,696.64x = 119,181.78 × 74,552.58
  4. Step 4: Simplify right side
    86,696.64x = 8,885,309,187.99
  5. Step 5: Solve for x
    x = 8,885,309,187.99/86,696.64
  6. Step 6: Final answer
    x = 102,487.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.