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Finding the Fourth Proportional to 103,620, 155,456.10 and 29,748

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Solution

The fourth proportional to 103,620, 155,456.10 and 29,748 is: 44,629.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620 : 155,456.10 = 29,748 : x
  2. Step 2: Convert to fraction form
    103,620/155,456.10 = 29,748/x
  3. Step 3: Cross multiply
    103,620x = 155,456.10 × 29,748
  4. Step 4: Simplify right side
    103,620x = 4,624,508,062.80
  5. Step 5: Solve for x
    x = 4,624,508,062.80/103,620
  6. Step 6: Final answer
    x = 44,629.49

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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.