Home / 78,107.15-107,761.41-51,247.15

Finding the Fourth Proportional to 78,107.15, 107,761.41 and 51,247.15

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Solution

The fourth proportional to 78,107.15, 107,761.41 and 51,247.15 is: 70,703.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,107.15 : 107,761.41 = 51,247.15 : x
  2. Step 2: Convert to fraction form
    78,107.15/107,761.41 = 51,247.15/x
  3. Step 3: Cross multiply
    78,107.15x = 107,761.41 × 51,247.15
  4. Step 4: Simplify right side
    78,107.15x = 5,522,465,142.48
  5. Step 5: Solve for x
    x = 5,522,465,142.48/78,107.15
  6. Step 6: Final answer
    x = 70,703.71

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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.