Home / 78,372.46-117,558.82-19,208.32

Finding the Fourth Proportional to 78,372.46, 117,558.82 and 19,208.32

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Solution

The fourth proportional to 78,372.46, 117,558.82 and 19,208.32 is: 28,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372.46 : 117,558.82 = 19,208.32 : x
  2. Step 2: Convert to fraction form
    78,372.46/117,558.82 = 19,208.32/x
  3. Step 3: Cross multiply
    78,372.46x = 117,558.82 × 19,208.32
  4. Step 4: Simplify right side
    78,372.46x = 2,258,107,433.38
  5. Step 5: Solve for x
    x = 2,258,107,433.38/78,372.46
  6. Step 6: Final answer
    x = 28,812.51

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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.