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Finding the Fourth Proportional to 63,012, 86,969.10 and 36,172.56

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Solution

The fourth proportional to 63,012, 86,969.10 and 36,172.56 is: 49,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,012 : 86,969.10 = 36,172.56 : x
  2. Step 2: Convert to fraction form
    63,012/86,969.10 = 36,172.56/x
  3. Step 3: Cross multiply
    63,012x = 86,969.10 × 36,172.56
  4. Step 4: Simplify right side
    63,012x = 3,145,894,987.90
  5. Step 5: Solve for x
    x = 3,145,894,987.90/63,012
  6. Step 6: Final answer
    x = 49,925.33

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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.