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Finding the Fourth Proportional to 40,670.53, 61,007.96 and 12,609.97

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Solution

The fourth proportional to 40,670.53, 61,007.96 and 12,609.97 is: 18,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,670.53 : 61,007.96 = 12,609.97 : x
  2. Step 2: Convert to fraction form
    40,670.53/61,007.96 = 12,609.97/x
  3. Step 3: Cross multiply
    40,670.53x = 61,007.96 × 12,609.97
  4. Step 4: Simplify right side
    40,670.53x = 769,308,424.37
  5. Step 5: Solve for x
    x = 769,308,424.37/40,670.53
  6. Step 6: Final answer
    x = 18,915.62

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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.