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Finding the Fourth Proportional to 49,792.40, 74,717.40 and 18,630.80

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Solution

The fourth proportional to 49,792.40, 74,717.40 and 18,630.80 is: 27,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,792.40 : 74,717.40 = 18,630.80 : x
  2. Step 2: Convert to fraction form
    49,792.40/74,717.40 = 18,630.80/x
  3. Step 3: Cross multiply
    49,792.40x = 74,717.40 × 18,630.80
  4. Step 4: Simplify right side
    49,792.40x = 1,392,044,935.92
  5. Step 5: Solve for x
    x = 1,392,044,935.92/49,792.40
  6. Step 6: Final answer
    x = 27,956.98

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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.