Home / 57,212.20-78,873.78-35,979.40

Finding the Fourth Proportional to 57,212.20, 78,873.78 and 35,979.40

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Solution

The fourth proportional to 57,212.20, 78,873.78 and 35,979.40 is: 49,601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,212.20 : 78,873.78 = 35,979.40 : x
  2. Step 2: Convert to fraction form
    57,212.20/78,873.78 = 35,979.40/x
  3. Step 3: Cross multiply
    57,212.20x = 78,873.78 × 35,979.40
  4. Step 4: Simplify right side
    57,212.20x = 2,837,831,280.13
  5. Step 5: Solve for x
    x = 2,837,831,280.13/57,212.20
  6. Step 6: Final answer
    x = 49,601.86

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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.