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Finding the Fourth Proportional to 72,014.64, 108,098.04 and 40,451.68

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Solution

The fourth proportional to 72,014.64, 108,098.04 and 40,451.68 is: 60,720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,014.64 : 108,098.04 = 40,451.68 : x
  2. Step 2: Convert to fraction form
    72,014.64/108,098.04 = 40,451.68/x
  3. Step 3: Cross multiply
    72,014.64x = 108,098.04 × 40,451.68
  4. Step 4: Simplify right side
    72,014.64x = 4,372,747,322.71
  5. Step 5: Solve for x
    x = 4,372,747,322.71/72,014.64
  6. Step 6: Final answer
    x = 60,720.26

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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.