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Finding the Fourth Proportional to 72,655.92, 108,563.15 and 55,696.14

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Solution

The fourth proportional to 72,655.92, 108,563.15 and 55,696.14 is: 83,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,655.92 : 108,563.15 = 55,696.14 : x
  2. Step 2: Convert to fraction form
    72,655.92/108,563.15 = 55,696.14/x
  3. Step 3: Cross multiply
    72,655.92x = 108,563.15 × 55,696.14
  4. Step 4: Simplify right side
    72,655.92x = 6,046,548,540.48
  5. Step 5: Solve for x
    x = 6,046,548,540.48/72,655.92
  6. Step 6: Final answer
    x = 83,221.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.