Home / 78,825.09-108,778.57-50,530.75

Finding the Fourth Proportional to 78,825.09, 108,778.57 and 50,530.75

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Solution

The fourth proportional to 78,825.09, 108,778.57 and 50,530.75 is: 69,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,825.09 : 108,778.57 = 50,530.75 : x
  2. Step 2: Convert to fraction form
    78,825.09/108,778.57 = 50,530.75/x
  3. Step 3: Cross multiply
    78,825.09x = 108,778.57 × 50,530.75
  4. Step 4: Simplify right side
    78,825.09x = 5,496,662,726.03
  5. Step 5: Solve for x
    x = 5,496,662,726.03/78,825.09
  6. Step 6: Final answer
    x = 69,732.40

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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.