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Finding the Fourth Proportional to 63,653.40, 95,491.80 and 20,961.18

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Solution

The fourth proportional to 63,653.40, 95,491.80 and 20,961.18 is: 31,445.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,653.40 : 95,491.80 = 20,961.18 : x
  2. Step 2: Convert to fraction form
    63,653.40/95,491.80 = 20,961.18/x
  3. Step 3: Cross multiply
    63,653.40x = 95,491.80 × 20,961.18
  4. Step 4: Simplify right side
    63,653.40x = 2,001,620,808.32
  5. Step 5: Solve for x
    x = 2,001,620,808.32/63,653.40
  6. Step 6: Final answer
    x = 31,445.62

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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.