Home / 78,604.38-117,903.33-19,438.56

Finding the Fourth Proportional to 78,604.38, 117,903.33 and 19,438.56

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Solution

The fourth proportional to 78,604.38, 117,903.33 and 19,438.56 is: 29,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,604.38 : 117,903.33 = 19,438.56 : x
  2. Step 2: Convert to fraction form
    78,604.38/117,903.33 = 19,438.56/x
  3. Step 3: Cross multiply
    78,604.38x = 117,903.33 × 19,438.56
  4. Step 4: Simplify right side
    78,604.38x = 2,291,870,954.40
  5. Step 5: Solve for x
    x = 2,291,870,954.40/78,604.38
  6. Step 6: Final answer
    x = 29,157.04

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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.