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Finding the Fourth Proportional to 72,487.68, 108,730.08 and 41,256

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Solution

The fourth proportional to 72,487.68, 108,730.08 and 41,256 is: 61,883.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,487.68 : 108,730.08 = 41,256 : x
  2. Step 2: Convert to fraction form
    72,487.68/108,730.08 = 41,256/x
  3. Step 3: Cross multiply
    72,487.68x = 108,730.08 × 41,256
  4. Step 4: Simplify right side
    72,487.68x = 4,485,768,180.48
  5. Step 5: Solve for x
    x = 4,485,768,180.48/72,487.68
  6. Step 6: Final answer
    x = 61,883.18

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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.