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Finding the Fourth Proportional to 63,059.82, 86,973.31 and 40,400.91

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Solution

The fourth proportional to 63,059.82, 86,973.31 and 40,400.91 is: 55,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,059.82 : 86,973.31 = 40,400.91 : x
  2. Step 2: Convert to fraction form
    63,059.82/86,973.31 = 40,400.91/x
  3. Step 3: Cross multiply
    63,059.82x = 86,973.31 × 40,400.91
  4. Step 4: Simplify right side
    63,059.82x = 3,513,800,920.21
  5. Step 5: Solve for x
    x = 3,513,800,920.21/63,059.82
  6. Step 6: Final answer
    x = 55,721.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.