Home / 78,433.02-117,664.11-25,844.58

Finding the Fourth Proportional to 78,433.02, 117,664.11 and 25,844.58

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Solution

The fourth proportional to 78,433.02, 117,664.11 and 25,844.58 is: 38,771.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,433.02 : 117,664.11 = 25,844.58 : x
  2. Step 2: Convert to fraction form
    78,433.02/117,664.11 = 25,844.58/x
  3. Step 3: Cross multiply
    78,433.02x = 117,664.11 × 25,844.58
  4. Step 4: Simplify right side
    78,433.02x = 3,040,979,504.02
  5. Step 5: Solve for x
    x = 3,040,979,504.02/78,433.02
  6. Step 6: Final answer
    x = 38,771.67

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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.