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Finding the Fourth Proportional to 34,880.72, 48,135.28 and 18,965.20

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Solution

The fourth proportional to 34,880.72, 48,135.28 and 18,965.20 is: 26,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,880.72 : 48,135.28 = 18,965.20 : x
  2. Step 2: Convert to fraction form
    34,880.72/48,135.28 = 18,965.20/x
  3. Step 3: Cross multiply
    34,880.72x = 48,135.28 × 18,965.20
  4. Step 4: Simplify right side
    34,880.72x = 912,895,212.26
  5. Step 5: Solve for x
    x = 912,895,212.26/34,880.72
  6. Step 6: Final answer
    x = 26,171.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.