Home / 40,670.40-61,007.78-12,609.84

Finding the Fourth Proportional to 40,670.40, 61,007.78 and 12,609.84

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Solution

The fourth proportional to 40,670.40, 61,007.78 and 12,609.84 is: 18,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,670.40 : 61,007.78 = 12,609.84 : x
  2. Step 2: Convert to fraction form
    40,670.40/61,007.78 = 12,609.84/x
  3. Step 3: Cross multiply
    40,670.40x = 61,007.78 × 12,609.84
  4. Step 4: Simplify right side
    40,670.40x = 769,298,344.56
  5. Step 5: Solve for x
    x = 769,298,344.56/40,670.40
  6. Step 6: Final answer
    x = 18,915.44

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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.