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Finding the Fourth Proportional to 33,978.70, 50,970.30 and 9,018.40

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Solution

The fourth proportional to 33,978.70, 50,970.30 and 9,018.40 is: 13,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,978.70 : 50,970.30 = 9,018.40 : x
  2. Step 2: Convert to fraction form
    33,978.70/50,970.30 = 9,018.40/x
  3. Step 3: Cross multiply
    33,978.70x = 50,970.30 × 9,018.40
  4. Step 4: Simplify right side
    33,978.70x = 459,670,553.52
  5. Step 5: Solve for x
    x = 459,670,553.52/33,978.70
  6. Step 6: Final answer
    x = 13,528.20

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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.