Home / 78,322.16-117,489.42-22,161.38

Finding the Fourth Proportional to 78,322.16, 117,489.42 and 22,161.38

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Solution

The fourth proportional to 78,322.16, 117,489.42 and 22,161.38 is: 33,243.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.16 : 117,489.42 = 22,161.38 : x
  2. Step 2: Convert to fraction form
    78,322.16/117,489.42 = 22,161.38/x
  3. Step 3: Cross multiply
    78,322.16x = 117,489.42 × 22,161.38
  4. Step 4: Simplify right side
    78,322.16x = 2,603,727,095.15
  5. Step 5: Solve for x
    x = 2,603,727,095.15/78,322.16
  6. Step 6: Final answer
    x = 33,243.81

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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.