Home / 78,469.10-108,276.75-50,154.70

Finding the Fourth Proportional to 78,469.10, 108,276.75 and 50,154.70

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Solution

The fourth proportional to 78,469.10, 108,276.75 and 50,154.70 is: 69,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,469.10 : 108,276.75 = 50,154.70 : x
  2. Step 2: Convert to fraction form
    78,469.10/108,276.75 = 50,154.70/x
  3. Step 3: Cross multiply
    78,469.10x = 108,276.75 × 50,154.70
  4. Step 4: Simplify right side
    78,469.10x = 5,430,587,913.23
  5. Step 5: Solve for x
    x = 5,430,587,913.23/78,469.10
  6. Step 6: Final answer
    x = 69,206.71

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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.