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Finding the Fourth Proportional to 79,871.43, 119,772.16 and 29,916.48

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Solution

The fourth proportional to 79,871.43, 119,772.16 and 29,916.48 is: 44,861.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,871.43 : 119,772.16 = 29,916.48 : x
  2. Step 2: Convert to fraction form
    79,871.43/119,772.16 = 29,916.48/x
  3. Step 3: Cross multiply
    79,871.43x = 119,772.16 × 29,916.48
  4. Step 4: Simplify right side
    79,871.43x = 3,583,161,429.20
  5. Step 5: Solve for x
    x = 3,583,161,429.20/79,871.43
  6. Step 6: Final answer
    x = 44,861.62

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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.