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Finding the Fourth Proportional to 63,478.94, 87,611.76 and 39,282.62

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Solution

The fourth proportional to 63,478.94, 87,611.76 and 39,282.62 is: 54,216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,478.94 : 87,611.76 = 39,282.62 : x
  2. Step 2: Convert to fraction form
    63,478.94/87,611.76 = 39,282.62/x
  3. Step 3: Cross multiply
    63,478.94x = 87,611.76 × 39,282.62
  4. Step 4: Simplify right side
    63,478.94x = 3,441,619,037.55
  5. Step 5: Solve for x
    x = 3,441,619,037.55/63,478.94
  6. Step 6: Final answer
    x = 54,216.71

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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.