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Finding the Fourth Proportional to 63,630.87, 87,854.54 and 39,768.27

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Solution

The fourth proportional to 63,630.87, 87,854.54 and 39,768.27 is: 54,907.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,630.87 : 87,854.54 = 39,768.27 : x
  2. Step 2: Convert to fraction form
    63,630.87/87,854.54 = 39,768.27/x
  3. Step 3: Cross multiply
    63,630.87x = 87,854.54 × 39,768.27
  4. Step 4: Simplify right side
    63,630.87x = 3,493,822,868.60
  5. Step 5: Solve for x
    x = 3,493,822,868.60/63,630.87
  6. Step 6: Final answer
    x = 54,907.67

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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.