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Finding the Fourth Proportional to 35,405.10, 48,841.95 and 21,991.95

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Solution

The fourth proportional to 35,405.10, 48,841.95 and 21,991.95 is: 30,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,405.10 : 48,841.95 = 21,991.95 : x
  2. Step 2: Convert to fraction form
    35,405.10/48,841.95 = 21,991.95/x
  3. Step 3: Cross multiply
    35,405.10x = 48,841.95 × 21,991.95
  4. Step 4: Simplify right side
    35,405.10x = 1,074,129,722.30
  5. Step 5: Solve for x
    x = 1,074,129,722.30/35,405.10
  6. Step 6: Final answer
    x = 30,338.28

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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.