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Finding the Fourth Proportional to 35,863.70, 49,471.68 and 21,519.72

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Solution

The fourth proportional to 35,863.70, 49,471.68 and 21,519.72 is: 29,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,863.70 : 49,471.68 = 21,519.72 : x
  2. Step 2: Convert to fraction form
    35,863.70/49,471.68 = 21,519.72/x
  3. Step 3: Cross multiply
    35,863.70x = 49,471.68 × 21,519.72
  4. Step 4: Simplify right side
    35,863.70x = 1,064,616,596.71
  5. Step 5: Solve for x
    x = 1,064,616,596.71/35,863.70
  6. Step 6: Final answer
    x = 29,685.07

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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.