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Finding the Fourth Proportional to 86,873.10, 119,871.27 and 51,093.78

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Solution

The fourth proportional to 86,873.10, 119,871.27 and 51,093.78 is: 70,501.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,873.10 : 119,871.27 = 51,093.78 : x
  2. Step 2: Convert to fraction form
    86,873.10/119,871.27 = 51,093.78/x
  3. Step 3: Cross multiply
    86,873.10x = 119,871.27 × 51,093.78
  4. Step 4: Simplify right side
    86,873.10x = 6,124,676,297.70
  5. Step 5: Solve for x
    x = 6,124,676,297.70/86,873.10
  6. Step 6: Final answer
    x = 70,501.41

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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.