Home / 78,455.90-108,293.91-50,161.70

Finding the Fourth Proportional to 78,455.90, 108,293.91 and 50,161.70

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Solution

The fourth proportional to 78,455.90, 108,293.91 and 50,161.70 is: 69,238.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.90 : 108,293.91 = 50,161.70 : x
  2. Step 2: Convert to fraction form
    78,455.90/108,293.91 = 50,161.70/x
  3. Step 3: Cross multiply
    78,455.90x = 108,293.91 × 50,161.70
  4. Step 4: Simplify right side
    78,455.90x = 5,432,206,625.25
  5. Step 5: Solve for x
    x = 5,432,206,625.25/78,455.90
  6. Step 6: Final answer
    x = 69,238.98

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1.5x scale

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.