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Finding the Fourth Proportional to 66,929.82, 100,260.87 and 40,261.11

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Solution

The fourth proportional to 66,929.82, 100,260.87 and 40,261.11 is: 60,311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,929.82 : 100,260.87 = 40,261.11 : x
  2. Step 2: Convert to fraction form
    66,929.82/100,260.87 = 40,261.11/x
  3. Step 3: Cross multiply
    66,929.82x = 100,260.87 × 40,261.11
  4. Step 4: Simplify right side
    66,929.82x = 4,036,613,915.77
  5. Step 5: Solve for x
    x = 4,036,613,915.77/66,929.82
  6. Step 6: Final answer
    x = 60,311.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.