Home / 86,172.11-118,914.67-47,930.58

Finding the Fourth Proportional to 86,172.11, 118,914.67 and 47,930.58

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Solution

The fourth proportional to 86,172.11, 118,914.67 and 47,930.58 is: 66,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,172.11 : 118,914.67 = 47,930.58 : x
  2. Step 2: Convert to fraction form
    86,172.11/118,914.67 = 47,930.58/x
  3. Step 3: Cross multiply
    86,172.11x = 118,914.67 × 47,930.58
  4. Step 4: Simplify right side
    86,172.11x = 5,699,649,161.28
  5. Step 5: Solve for x
    x = 5,699,649,161.28/86,172.11
  6. Step 6: Final answer
    x = 66,142.62

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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.