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Finding the Fourth Proportional to 61,227.56, 91,813.64 and 21,785.72

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Solution

The fourth proportional to 61,227.56, 91,813.64 and 21,785.72 is: 32,668.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,227.56 : 91,813.64 = 21,785.72 : x
  2. Step 2: Convert to fraction form
    61,227.56/91,813.64 = 21,785.72/x
  3. Step 3: Cross multiply
    61,227.56x = 91,813.64 × 21,785.72
  4. Step 4: Simplify right side
    61,227.56x = 2,000,225,685.22
  5. Step 5: Solve for x
    x = 2,000,225,685.22/61,227.56
  6. Step 6: Final answer
    x = 32,668.71

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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.