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Finding the Fourth Proportional to 63,305.39, 87,378.72 and 39,417.95

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Solution

The fourth proportional to 63,305.39, 87,378.72 and 39,417.95 is: 54,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,305.39 : 87,378.72 = 39,417.95 : x
  2. Step 2: Convert to fraction form
    63,305.39/87,378.72 = 39,417.95/x
  3. Step 3: Cross multiply
    63,305.39x = 87,378.72 × 39,417.95
  4. Step 4: Simplify right side
    63,305.39x = 3,444,290,086.65
  5. Step 5: Solve for x
    x = 3,444,290,086.65/63,305.39
  6. Step 6: Final answer
    x = 54,407.53

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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.