Home / 79,286.37-118,929-19,314.12

Finding the Fourth Proportional to 79,286.37, 118,929 and 19,314.12

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Solution

The fourth proportional to 79,286.37, 118,929 and 19,314.12 is: 28,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,286.37 : 118,929 = 19,314.12 : x
  2. Step 2: Convert to fraction form
    79,286.37/118,929 = 19,314.12/x
  3. Step 3: Cross multiply
    79,286.37x = 118,929 × 19,314.12
  4. Step 4: Simplify right side
    79,286.37x = 2,297,008,977.48
  5. Step 5: Solve for x
    x = 2,297,008,977.48/79,286.37
  6. Step 6: Final answer
    x = 28,971.04

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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.