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Finding the Fourth Proportional to 65,812.62, 90,821.41 and 37,138.35

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Solution

The fourth proportional to 65,812.62, 90,821.41 and 37,138.35 is: 51,250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,812.62 : 90,821.41 = 37,138.35 : x
  2. Step 2: Convert to fraction form
    65,812.62/90,821.41 = 37,138.35/x
  3. Step 3: Cross multiply
    65,812.62x = 90,821.41 × 37,138.35
  4. Step 4: Simplify right side
    65,812.62x = 3,372,957,312.07
  5. Step 5: Solve for x
    x = 3,372,957,312.07/65,812.62
  6. Step 6: Final answer
    x = 51,250.92

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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.