Home / 78,284.66-117,433.31-22,125.21

Finding the Fourth Proportional to 78,284.66, 117,433.31 and 22,125.21

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Solution

The fourth proportional to 78,284.66, 117,433.31 and 22,125.21 is: 33,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,284.66 : 117,433.31 = 22,125.21 : x
  2. Step 2: Convert to fraction form
    78,284.66/117,433.31 = 22,125.21/x
  3. Step 3: Cross multiply
    78,284.66x = 117,433.31 × 22,125.21
  4. Step 4: Simplify right side
    78,284.66x = 2,598,236,534.12
  5. Step 5: Solve for x
    x = 2,598,236,534.12/78,284.66
  6. Step 6: Final answer
    x = 33,189.60

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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.