Home / 78,097.53-117,145.24-18,933.70

Finding the Fourth Proportional to 78,097.53, 117,145.24 and 18,933.70

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Solution

The fourth proportional to 78,097.53, 117,145.24 and 18,933.70 is: 28,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,097.53 : 117,145.24 = 18,933.70 : x
  2. Step 2: Convert to fraction form
    78,097.53/117,145.24 = 18,933.70/x
  3. Step 3: Cross multiply
    78,097.53x = 117,145.24 × 18,933.70
  4. Step 4: Simplify right side
    78,097.53x = 2,217,992,830.59
  5. Step 5: Solve for x
    x = 2,217,992,830.59/78,097.53
  6. Step 6: Final answer
    x = 28,400.29

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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.