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Finding the Fourth Proportional to 55,554, 83,339.70 and 18,105.38

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Solution

The fourth proportional to 55,554, 83,339.70 and 18,105.38 is: 27,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,554 : 83,339.70 = 18,105.38 : x
  2. Step 2: Convert to fraction form
    55,554/83,339.70 = 18,105.38/x
  3. Step 3: Cross multiply
    55,554x = 83,339.70 × 18,105.38
  4. Step 4: Simplify right side
    55,554x = 1,508,896,430.36
  5. Step 5: Solve for x
    x = 1,508,896,430.36/55,554
  6. Step 6: Final answer
    x = 27,160.90

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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.