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Finding the Fourth Proportional to 67,175.45, 100,746.96 and 19,777.66

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Solution

The fourth proportional to 67,175.45, 100,746.96 and 19,777.66 is: 29,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,175.45 : 100,746.96 = 19,777.66 : x
  2. Step 2: Convert to fraction form
    67,175.45/100,746.96 = 19,777.66/x
  3. Step 3: Cross multiply
    67,175.45x = 100,746.96 × 19,777.66
  4. Step 4: Simplify right side
    67,175.45x = 1,992,538,820.08
  5. Step 5: Solve for x
    x = 1,992,538,820.08/67,175.45
  6. Step 6: Final answer
    x = 29,661.71

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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.