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Finding the Fourth Proportional to 72,655.79, 108,982.98 and 43,052.31

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Solution

The fourth proportional to 72,655.79, 108,982.98 and 43,052.31 is: 64,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,655.79 : 108,982.98 = 43,052.31 : x
  2. Step 2: Convert to fraction form
    72,655.79/108,982.98 = 43,052.31/x
  3. Step 3: Cross multiply
    72,655.79x = 108,982.98 × 43,052.31
  4. Step 4: Simplify right side
    72,655.79x = 4,691,969,039.68
  5. Step 5: Solve for x
    x = 4,691,969,039.68/72,655.79
  6. Step 6: Final answer
    x = 64,578.05

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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.