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Finding the Fourth Proportional to 61,115.22, 91,674.76 and 18,995.53

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Solution

The fourth proportional to 61,115.22, 91,674.76 and 18,995.53 is: 28,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115.22 : 91,674.76 = 18,995.53 : x
  2. Step 2: Convert to fraction form
    61,115.22/91,674.76 = 18,995.53/x
  3. Step 3: Cross multiply
    61,115.22x = 91,674.76 × 18,995.53
  4. Step 4: Simplify right side
    61,115.22x = 1,741,410,653.82
  5. Step 5: Solve for x
    x = 1,741,410,653.82/61,115.22
  6. Step 6: Final answer
    x = 28,493.89

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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.