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Finding the Fourth Proportional to 72,797.49, 100,443.87 and 40,954.77

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Solution

The fourth proportional to 72,797.49, 100,443.87 and 40,954.77 is: 56,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,797.49 : 100,443.87 = 40,954.77 : x
  2. Step 2: Convert to fraction form
    72,797.49/100,443.87 = 40,954.77/x
  3. Step 3: Cross multiply
    72,797.49x = 100,443.87 × 40,954.77
  4. Step 4: Simplify right side
    72,797.49x = 4,113,655,593.76
  5. Step 5: Solve for x
    x = 4,113,655,593.76/72,797.49
  6. Step 6: Final answer
    x = 56,508.21

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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.