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Finding the Fourth Proportional to 63,309.48, 87,393.99 and 39,447.95

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Solution

The fourth proportional to 63,309.48, 87,393.99 and 39,447.95 is: 54,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,309.48 : 87,393.99 = 39,447.95 : x
  2. Step 2: Convert to fraction form
    63,309.48/87,393.99 = 39,447.95/x
  3. Step 3: Cross multiply
    63,309.48x = 87,393.99 × 39,447.95
  4. Step 4: Simplify right side
    63,309.48x = 3,447,513,310.85
  5. Step 5: Solve for x
    x = 3,447,513,310.85/63,309.48
  6. Step 6: Final answer
    x = 54,454.93

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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.