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Finding the Fourth Proportional to 35,129.80, 48,504.48 and 21,719.44

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Solution

The fourth proportional to 35,129.80, 48,504.48 and 21,719.44 is: 29,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,129.80 : 48,504.48 = 21,719.44 : x
  2. Step 2: Convert to fraction form
    35,129.80/48,504.48 = 21,719.44/x
  3. Step 3: Cross multiply
    35,129.80x = 48,504.48 × 21,719.44
  4. Step 4: Simplify right side
    35,129.80x = 1,053,490,143.09
  5. Step 5: Solve for x
    x = 1,053,490,143.09/35,129.80
  6. Step 6: Final answer
    x = 29,988.50

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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.