Home / 68,569.60-102,861.78-21,811.54

Finding the Fourth Proportional to 68,569.60, 102,861.78 and 21,811.54

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Solution

The fourth proportional to 68,569.60, 102,861.78 and 21,811.54 is: 32,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,569.60 : 102,861.78 = 21,811.54 : x
  2. Step 2: Convert to fraction form
    68,569.60/102,861.78 = 21,811.54/x
  3. Step 3: Cross multiply
    68,569.60x = 102,861.78 × 21,811.54
  4. Step 4: Simplify right side
    68,569.60x = 2,243,573,828.94
  5. Step 5: Solve for x
    x = 2,243,573,828.94/68,569.60
  6. Step 6: Final answer
    x = 32,719.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.