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Finding the Fourth Proportional to 65,161.80, 89,937.18 and 49,888.98

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Solution

The fourth proportional to 65,161.80, 89,937.18 and 49,888.98 is: 68,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,161.80 : 89,937.18 = 49,888.98 : x
  2. Step 2: Convert to fraction form
    65,161.80/89,937.18 = 49,888.98/x
  3. Step 3: Cross multiply
    65,161.80x = 89,937.18 × 49,888.98
  4. Step 4: Simplify right side
    65,161.80x = 4,486,874,174.28
  5. Step 5: Solve for x
    x = 4,486,874,174.28/65,161.80
  6. Step 6: Final answer
    x = 68,857.43

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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.