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Finding the Fourth Proportional to 101,990.32, 140,706.33 and 58,961.89

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Solution

The fourth proportional to 101,990.32, 140,706.33 and 58,961.89 is: 81,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,990.32 : 140,706.33 = 58,961.89 : x
  2. Step 2: Convert to fraction form
    101,990.32/140,706.33 = 58,961.89/x
  3. Step 3: Cross multiply
    101,990.32x = 140,706.33 × 58,961.89
  4. Step 4: Simplify right side
    101,990.32x = 8,296,311,327.65
  5. Step 5: Solve for x
    x = 8,296,311,327.65/101,990.32
  6. Step 6: Final answer
    x = 81,344.11

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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.