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Finding the Fourth Proportional to 128,522.53, 192,752.74 and 49,586.41

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Solution

The fourth proportional to 128,522.53, 192,752.74 and 49,586.41 is: 74,367.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,522.53 : 192,752.74 = 49,586.41 : x
  2. Step 2: Convert to fraction form
    128,522.53/192,752.74 = 49,586.41/x
  3. Step 3: Cross multiply
    128,522.53x = 192,752.74 × 49,586.41
  4. Step 4: Simplify right side
    128,522.53x = 9,557,916,394.26
  5. Step 5: Solve for x
    x = 9,557,916,394.26/128,522.53
  6. Step 6: Final answer
    x = 74,367.63

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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.