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Finding the Fourth Proportional to 73,114.20, 100,800 and 54,887.76

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Solution

The fourth proportional to 73,114.20, 100,800 and 54,887.76 is: 75,671.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,114.20 : 100,800 = 54,887.76 : x
  2. Step 2: Convert to fraction form
    73,114.20/100,800 = 54,887.76/x
  3. Step 3: Cross multiply
    73,114.20x = 100,800 × 54,887.76
  4. Step 4: Simplify right side
    73,114.20x = 5,532,686,208
  5. Step 5: Solve for x
    x = 5,532,686,208/73,114.20
  6. Step 6: Final answer
    x = 75,671.84

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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.