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Finding the Fourth Proportional to 55,957.38, 83,936.08 and 18,507.40

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Solution

The fourth proportional to 55,957.38, 83,936.08 and 18,507.40 is: 27,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,957.38 : 83,936.08 = 18,507.40 : x
  2. Step 2: Convert to fraction form
    55,957.38/83,936.08 = 18,507.40/x
  3. Step 3: Cross multiply
    55,957.38x = 83,936.08 × 18,507.40
  4. Step 4: Simplify right side
    55,957.38x = 1,553,438,606.99
  5. Step 5: Solve for x
    x = 1,553,438,606.99/55,957.38
  6. Step 6: Final answer
    x = 27,761.10

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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.