Home / 78,024.14-117,036.24-18,859.80

Finding the Fourth Proportional to 78,024.14, 117,036.24 and 18,859.80

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Solution

The fourth proportional to 78,024.14, 117,036.24 and 18,859.80 is: 28,289.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,024.14 : 117,036.24 = 18,859.80 : x
  2. Step 2: Convert to fraction form
    78,024.14/117,036.24 = 18,859.80/x
  3. Step 3: Cross multiply
    78,024.14x = 117,036.24 × 18,859.80
  4. Step 4: Simplify right side
    78,024.14x = 2,207,280,079.15
  5. Step 5: Solve for x
    x = 2,207,280,079.15/78,024.14
  6. Step 6: Final answer
    x = 28,289.71

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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.