Home / 68,340.15-102,525.24-20,961.74

Finding the Fourth Proportional to 68,340.15, 102,525.24 and 20,961.74

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Solution

The fourth proportional to 68,340.15, 102,525.24 and 20,961.74 is: 31,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,340.15 : 102,525.24 = 20,961.74 : x
  2. Step 2: Convert to fraction form
    68,340.15/102,525.24 = 20,961.74/x
  3. Step 3: Cross multiply
    68,340.15x = 102,525.24 × 20,961.74
  4. Step 4: Simplify right side
    68,340.15x = 2,149,106,911.69
  5. Step 5: Solve for x
    x = 2,149,106,911.69/68,340.15
  6. Step 6: Final answer
    x = 31,447.21

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1.5x scale

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.