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Finding the Fourth Proportional to 125,252.80, 187,879.60 and 30,483

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Solution

The fourth proportional to 125,252.80, 187,879.60 and 30,483 is: 45,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,252.80 : 187,879.60 = 30,483 : x
  2. Step 2: Convert to fraction form
    125,252.80/187,879.60 = 30,483/x
  3. Step 3: Cross multiply
    125,252.80x = 187,879.60 × 30,483
  4. Step 4: Simplify right side
    125,252.80x = 5,727,133,846.80
  5. Step 5: Solve for x
    x = 5,727,133,846.80/125,252.80
  6. Step 6: Final answer
    x = 45,724.60

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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.