Home / 83,403.54-115,099.65-45,679.86

Finding the Fourth Proportional to 83,403.54, 115,099.65 and 45,679.86

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Solution

The fourth proportional to 83,403.54, 115,099.65 and 45,679.86 is: 63,039.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,403.54 : 115,099.65 = 45,679.86 : x
  2. Step 2: Convert to fraction form
    83,403.54/115,099.65 = 45,679.86/x
  3. Step 3: Cross multiply
    83,403.54x = 115,099.65 × 45,679.86
  4. Step 4: Simplify right side
    83,403.54x = 5,257,735,898.05
  5. Step 5: Solve for x
    x = 5,257,735,898.05/83,403.54
  6. Step 6: Final answer
    x = 63,039.72

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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.