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Finding the Fourth Proportional to 73,808.30, 110,700.54 and 21,205.82

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Solution

The fourth proportional to 73,808.30, 110,700.54 and 21,205.82 is: 31,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,808.30 : 110,700.54 = 21,205.82 : x
  2. Step 2: Convert to fraction form
    73,808.30/110,700.54 = 21,205.82/x
  3. Step 3: Cross multiply
    73,808.30x = 110,700.54 × 21,205.82
  4. Step 4: Simplify right side
    73,808.30x = 2,347,495,725.14
  5. Step 5: Solve for x
    x = 2,347,495,725.14/73,808.30
  6. Step 6: Final answer
    x = 31,805.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.