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Finding the Fourth Proportional to 61,228.30, 91,842.30 and 21,786.96

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Solution

The fourth proportional to 61,228.30, 91,842.30 and 21,786.96 is: 32,680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,228.30 : 91,842.30 = 21,786.96 : x
  2. Step 2: Convert to fraction form
    61,228.30/91,842.30 = 21,786.96/x
  3. Step 3: Cross multiply
    61,228.30x = 91,842.30 × 21,786.96
  4. Step 4: Simplify right side
    61,228.30x = 2,000,964,516.41
  5. Step 5: Solve for x
    x = 2,000,964,516.41/61,228.30
  6. Step 6: Final answer
    x = 32,680.39

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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.