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Finding the Fourth Proportional to 57,880.53, 86,827.02 and 18,428.43

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Solution

The fourth proportional to 57,880.53, 86,827.02 and 18,428.43 is: 27,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,880.53 : 86,827.02 = 18,428.43 : x
  2. Step 2: Convert to fraction form
    57,880.53/86,827.02 = 18,428.43/x
  3. Step 3: Cross multiply
    57,880.53x = 86,827.02 × 18,428.43
  4. Step 4: Simplify right side
    57,880.53x = 1,600,085,660.18
  5. Step 5: Solve for x
    x = 1,600,085,660.18/57,880.53
  6. Step 6: Final answer
    x = 27,644.63

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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.