Home / 66,343.05-91,553.49-36,128.43

Finding the Fourth Proportional to 66,343.05, 91,553.49 and 36,128.43

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Solution

The fourth proportional to 66,343.05, 91,553.49 and 36,128.43 is: 49,857.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,343.05 : 91,553.49 = 36,128.43 : x
  2. Step 2: Convert to fraction form
    66,343.05/91,553.49 = 36,128.43/x
  3. Step 3: Cross multiply
    66,343.05x = 91,553.49 × 36,128.43
  4. Step 4: Simplify right side
    66,343.05x = 3,307,683,854.72
  5. Step 5: Solve for x
    x = 3,307,683,854.72/66,343.05
  6. Step 6: Final answer
    x = 49,857.28

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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.