Home / 67,186.40-100,775.95-20,435.63

Finding the Fourth Proportional to 67,186.40, 100,775.95 and 20,435.63

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Solution

The fourth proportional to 67,186.40, 100,775.95 and 20,435.63 is: 30,652.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,186.40 : 100,775.95 = 20,435.63 : x
  2. Step 2: Convert to fraction form
    67,186.40/100,775.95 = 20,435.63/x
  3. Step 3: Cross multiply
    67,186.40x = 100,775.95 × 20,435.63
  4. Step 4: Simplify right side
    67,186.40x = 2,059,419,472.13
  5. Step 5: Solve for x
    x = 2,059,419,472.13/67,186.40
  6. Step 6: Final answer
    x = 30,652.33

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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.