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Finding the Fourth Proportional to 65,754.79, 90,736.20 and 37,072.89

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Solution

The fourth proportional to 65,754.79, 90,736.20 and 37,072.89 is: 51,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,754.79 : 90,736.20 = 37,072.89 : x
  2. Step 2: Convert to fraction form
    65,754.79/90,736.20 = 37,072.89/x
  3. Step 3: Cross multiply
    65,754.79x = 90,736.20 × 37,072.89
  4. Step 4: Simplify right side
    65,754.79x = 3,363,853,161.62
  5. Step 5: Solve for x
    x = 3,363,853,161.62/65,754.79
  6. Step 6: Final answer
    x = 51,157.54

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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.