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Finding the Fourth Proportional to 63,605.34, 87,813.41 and 39,764.30

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Solution

The fourth proportional to 63,605.34, 87,813.41 and 39,764.30 is: 54,898.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,605.34 : 87,813.41 = 39,764.30 : x
  2. Step 2: Convert to fraction form
    63,605.34/87,813.41 = 39,764.30/x
  3. Step 3: Cross multiply
    63,605.34x = 87,813.41 × 39,764.30
  4. Step 4: Simplify right side
    63,605.34x = 3,491,838,141.37
  5. Step 5: Solve for x
    x = 3,491,838,141.37/63,605.34
  6. Step 6: Final answer
    x = 54,898.51

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1.5x scale

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.