Home / 78,097.24-117,144.76-18,933.40

Finding the Fourth Proportional to 78,097.24, 117,144.76 and 18,933.40

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Solution

The fourth proportional to 78,097.24, 117,144.76 and 18,933.40 is: 28,399.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,097.24 : 117,144.76 = 18,933.40 : x
  2. Step 2: Convert to fraction form
    78,097.24/117,144.76 = 18,933.40/x
  3. Step 3: Cross multiply
    78,097.24x = 117,144.76 × 18,933.40
  4. Step 4: Simplify right side
    78,097.24x = 2,217,948,598.98
  5. Step 5: Solve for x
    x = 2,217,948,598.98/78,097.24
  6. Step 6: Final answer
    x = 28,399.83

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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.