Home / 77,025.67-115,530.60-20,863.51

Finding the Fourth Proportional to 77,025.67, 115,530.60 and 20,863.51

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Solution

The fourth proportional to 77,025.67, 115,530.60 and 20,863.51 is: 31,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,025.67 : 115,530.60 = 20,863.51 : x
  2. Step 2: Convert to fraction form
    77,025.67/115,530.60 = 20,863.51/x
  3. Step 3: Cross multiply
    77,025.67x = 115,530.60 × 20,863.51
  4. Step 4: Simplify right side
    77,025.67x = 2,410,373,617.82
  5. Step 5: Solve for x
    x = 2,410,373,617.82/77,025.67
  6. Step 6: Final answer
    x = 31,293.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.