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Finding the Fourth Proportional to 55,810.72, 83,706.88 and 18,371.28

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Solution

The fourth proportional to 55,810.72, 83,706.88 and 18,371.28 is: 27,553.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,810.72 : 83,706.88 = 18,371.28 : x
  2. Step 2: Convert to fraction form
    55,810.72/83,706.88 = 18,371.28/x
  3. Step 3: Cross multiply
    55,810.72x = 83,706.88 × 18,371.28
  4. Step 4: Simplify right side
    55,810.72x = 1,537,802,530.41
  5. Step 5: Solve for x
    x = 1,537,802,530.41/55,810.72
  6. Step 6: Final answer
    x = 27,553.89

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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.