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Finding the Fourth Proportional to 76,250.30, 114,389.84 and 28,879.58

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Solution

The fourth proportional to 76,250.30, 114,389.84 and 28,879.58 is: 43,324.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,250.30 : 114,389.84 = 28,879.58 : x
  2. Step 2: Convert to fraction form
    76,250.30/114,389.84 = 28,879.58/x
  3. Step 3: Cross multiply
    76,250.30x = 114,389.84 × 28,879.58
  4. Step 4: Simplify right side
    76,250.30x = 3,303,529,981.57
  5. Step 5: Solve for x
    x = 3,303,529,981.57/76,250.30
  6. Step 6: Final answer
    x = 43,324.81

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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.