Home / 75,908.20-113,638.02-72,660.52

Finding the Fourth Proportional to 75,908.20, 113,638.02 and 72,660.52

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Solution

The fourth proportional to 75,908.20, 113,638.02 and 72,660.52 is: 108,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,908.20 : 113,638.02 = 72,660.52 : x
  2. Step 2: Convert to fraction form
    75,908.20/113,638.02 = 72,660.52/x
  3. Step 3: Cross multiply
    75,908.20x = 113,638.02 × 72,660.52
  4. Step 4: Simplify right side
    75,908.20x = 8,256,997,624.97
  5. Step 5: Solve for x
    x = 8,256,997,624.97/75,908.20
  6. Step 6: Final answer
    x = 108,776.10

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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.