Home / 67,261.32-100,891.98-20,513.79

Finding the Fourth Proportional to 67,261.32, 100,891.98 and 20,513.79

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Solution

The fourth proportional to 67,261.32, 100,891.98 and 20,513.79 is: 30,770.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,261.32 : 100,891.98 = 20,513.79 : x
  2. Step 2: Convert to fraction form
    67,261.32/100,891.98 = 20,513.79/x
  3. Step 3: Cross multiply
    67,261.32x = 100,891.98 × 20,513.79
  4. Step 4: Simplify right side
    67,261.32x = 2,069,676,890.40
  5. Step 5: Solve for x
    x = 2,069,676,890.40/67,261.32
  6. Step 6: Final answer
    x = 30,770.69

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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.