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Finding the Fourth Proportional to 63,294.42, 87,384.20 and 39,453.40

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Solution

The fourth proportional to 63,294.42, 87,384.20 and 39,453.40 is: 54,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,294.42 : 87,384.20 = 39,453.40 : x
  2. Step 2: Convert to fraction form
    63,294.42/87,384.20 = 39,453.40/x
  3. Step 3: Cross multiply
    63,294.42x = 87,384.20 × 39,453.40
  4. Step 4: Simplify right side
    63,294.42x = 3,447,603,796.28
  5. Step 5: Solve for x
    x = 3,447,603,796.28/63,294.42
  6. Step 6: Final answer
    x = 54,469.32

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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.