Home / 80,712.37-111,437.94-50,509.90

Finding the Fourth Proportional to 80,712.37, 111,437.94 and 50,509.90

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Solution

The fourth proportional to 80,712.37, 111,437.94 and 50,509.90 is: 69,738.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,712.37 : 111,437.94 = 50,509.90 : x
  2. Step 2: Convert to fraction form
    80,712.37/111,437.94 = 50,509.90/x
  3. Step 3: Cross multiply
    80,712.37x = 111,437.94 × 50,509.90
  4. Step 4: Simplify right side
    80,712.37x = 5,628,719,205.61
  5. Step 5: Solve for x
    x = 5,628,719,205.61/80,712.37
  6. Step 6: Final answer
    x = 69,738.00

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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.