Home / 68,024.37-102,036.79-20,639.86

Finding the Fourth Proportional to 68,024.37, 102,036.79 and 20,639.86

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Solution

The fourth proportional to 68,024.37, 102,036.79 and 20,639.86 is: 30,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,024.37 : 102,036.79 = 20,639.86 : x
  2. Step 2: Convert to fraction form
    68,024.37/102,036.79 = 20,639.86/x
  3. Step 3: Cross multiply
    68,024.37x = 102,036.79 × 20,639.86
  4. Step 4: Simplify right side
    68,024.37x = 2,106,025,060.45
  5. Step 5: Solve for x
    x = 2,106,025,060.45/68,024.37
  6. Step 6: Final answer
    x = 30,959.86

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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.