Home / 78,172.11-117,265.08-22,012.71

Finding the Fourth Proportional to 78,172.11, 117,265.08 and 22,012.71

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Solution

The fourth proportional to 78,172.11, 117,265.08 and 22,012.71 is: 33,021.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,172.11 : 117,265.08 = 22,012.71 : x
  2. Step 2: Convert to fraction form
    78,172.11/117,265.08 = 22,012.71/x
  3. Step 3: Cross multiply
    78,172.11x = 117,265.08 × 22,012.71
  4. Step 4: Simplify right side
    78,172.11x = 2,581,322,199.17
  5. Step 5: Solve for x
    x = 2,581,322,199.17/78,172.11
  6. Step 6: Final answer
    x = 33,021.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.