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Finding the Fourth Proportional to 63,640.42, 95,460.90 and 21,520.72

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Solution

The fourth proportional to 63,640.42, 95,460.90 and 21,520.72 is: 32,281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,640.42 : 95,460.90 = 21,520.72 : x
  2. Step 2: Convert to fraction form
    63,640.42/95,460.90 = 21,520.72/x
  3. Step 3: Cross multiply
    63,640.42x = 95,460.90 × 21,520.72
  4. Step 4: Simplify right side
    63,640.42x = 2,054,387,338.47
  5. Step 5: Solve for x
    x = 2,054,387,338.47/63,640.42
  6. Step 6: Final answer
    x = 32,281.17

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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.