Home / 78,619.42-117,933.18-22,455.10

Finding the Fourth Proportional to 78,619.42, 117,933.18 and 22,455.10

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Solution

The fourth proportional to 78,619.42, 117,933.18 and 22,455.10 is: 33,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,619.42 : 117,933.18 = 22,455.10 : x
  2. Step 2: Convert to fraction form
    78,619.42/117,933.18 = 22,455.10/x
  3. Step 3: Cross multiply
    78,619.42x = 117,933.18 × 22,455.10
  4. Step 4: Simplify right side
    78,619.42x = 2,648,201,350.22
  5. Step 5: Solve for x
    x = 2,648,201,350.22/78,619.42
  6. Step 6: Final answer
    x = 33,683.81

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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.