Home / 72,823.88-100,443.30-54,919.64

Finding the Fourth Proportional to 72,823.88, 100,443.30 and 54,919.64

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Solution

The fourth proportional to 72,823.88, 100,443.30 and 54,919.64 is: 75,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,823.88 : 100,443.30 = 54,919.64 : x
  2. Step 2: Convert to fraction form
    72,823.88/100,443.30 = 54,919.64/x
  3. Step 3: Cross multiply
    72,823.88x = 100,443.30 × 54,919.64
  4. Step 4: Simplify right side
    72,823.88x = 5,516,309,876.41
  5. Step 5: Solve for x
    x = 5,516,309,876.41/72,823.88
  6. Step 6: Final answer
    x = 75,748.64

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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.