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Finding the Fourth Proportional to 40,624.70, 60,915.18 and 21,914.78

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Solution

The fourth proportional to 40,624.70, 60,915.18 and 21,914.78 is: 32,860.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,624.70 : 60,915.18 = 21,914.78 : x
  2. Step 2: Convert to fraction form
    40,624.70/60,915.18 = 21,914.78/x
  3. Step 3: Cross multiply
    40,624.70x = 60,915.18 × 21,914.78
  4. Step 4: Simplify right side
    40,624.70x = 1,334,942,768.36
  5. Step 5: Solve for x
    x = 1,334,942,768.36/40,624.70
  6. Step 6: Final answer
    x = 32,860.37

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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.