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Finding the Fourth Proportional to 39,604.41, 54,654.08 and 21,700.10

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Solution

The fourth proportional to 39,604.41, 54,654.08 and 21,700.10 is: 29,946.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,604.41 : 54,654.08 = 21,700.10 : x
  2. Step 2: Convert to fraction form
    39,604.41/54,654.08 = 21,700.10/x
  3. Step 3: Cross multiply
    39,604.41x = 54,654.08 × 21,700.10
  4. Step 4: Simplify right side
    39,604.41x = 1,185,998,619.64
  5. Step 5: Solve for x
    x = 1,185,998,619.64/39,604.41
  6. Step 6: Final answer
    x = 29,946.13

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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.