Home / 77,088.11-115,621.83-20,932.02

Finding the Fourth Proportional to 77,088.11, 115,621.83 and 20,932.02

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Solution

The fourth proportional to 77,088.11, 115,621.83 and 20,932.02 is: 31,395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,088.11 : 115,621.83 = 20,932.02 : x
  2. Step 2: Convert to fraction form
    77,088.11/115,621.83 = 20,932.02/x
  3. Step 3: Cross multiply
    77,088.11x = 115,621.83 × 20,932.02
  4. Step 4: Simplify right side
    77,088.11x = 2,420,198,458.00
  5. Step 5: Solve for x
    x = 2,420,198,458.00/77,088.11
  6. Step 6: Final answer
    x = 31,395.23

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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.