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Finding the Fourth Proportional to 35,393.40, 48,826.53 and 21,221.64

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Solution

The fourth proportional to 35,393.40, 48,826.53 and 21,221.64 is: 29,276.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,393.40 : 48,826.53 = 21,221.64 : x
  2. Step 2: Convert to fraction form
    35,393.40/48,826.53 = 21,221.64/x
  3. Step 3: Cross multiply
    35,393.40x = 48,826.53 × 21,221.64
  4. Step 4: Simplify right side
    35,393.40x = 1,036,179,042.11
  5. Step 5: Solve for x
    x = 1,036,179,042.11/35,393.40
  6. Step 6: Final answer
    x = 29,276.05

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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.