Home / 78,213.45-117,318.96-19,048.62

Finding the Fourth Proportional to 78,213.45, 117,318.96 and 19,048.62

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Solution

The fourth proportional to 78,213.45, 117,318.96 and 19,048.62 is: 28,572.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,213.45 : 117,318.96 = 19,048.62 : x
  2. Step 2: Convert to fraction form
    78,213.45/117,318.96 = 19,048.62/x
  3. Step 3: Cross multiply
    78,213.45x = 117,318.96 × 19,048.62
  4. Step 4: Simplify right side
    78,213.45x = 2,234,764,287.84
  5. Step 5: Solve for x
    x = 2,234,764,287.84/78,213.45
  6. Step 6: Final answer
    x = 28,572.63

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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.