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Finding the Fourth Proportional to 63,860.40, 95,790.60 and 40,513.20

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Solution

The fourth proportional to 63,860.40, 95,790.60 and 40,513.20 is: 60,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,860.40 : 95,790.60 = 40,513.20 : x
  2. Step 2: Convert to fraction form
    63,860.40/95,790.60 = 40,513.20/x
  3. Step 3: Cross multiply
    63,860.40x = 95,790.60 × 40,513.20
  4. Step 4: Simplify right side
    63,860.40x = 3,880,783,735.92
  5. Step 5: Solve for x
    x = 3,880,783,735.92/63,860.40
  6. Step 6: Final answer
    x = 60,769.80

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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.