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Finding the Fourth Proportional to 63,346.44, 87,420.42 and 40,990.44

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Solution

The fourth proportional to 63,346.44, 87,420.42 and 40,990.44 is: 56,568.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,346.44 : 87,420.42 = 40,990.44 : x
  2. Step 2: Convert to fraction form
    63,346.44/87,420.42 = 40,990.44/x
  3. Step 3: Cross multiply
    63,346.44x = 87,420.42 × 40,990.44
  4. Step 4: Simplify right side
    63,346.44x = 3,583,401,480.78
  5. Step 5: Solve for x
    x = 3,583,401,480.78/63,346.44
  6. Step 6: Final answer
    x = 56,568.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.