Home / 51,408.20-77,112.30-18,165.80

Finding the Fourth Proportional to 51,408.20, 77,112.30 and 18,165.80

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Solution

The fourth proportional to 51,408.20, 77,112.30 and 18,165.80 is: 27,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,408.20 : 77,112.30 = 18,165.80 : x
  2. Step 2: Convert to fraction form
    51,408.20/77,112.30 = 18,165.80/x
  3. Step 3: Cross multiply
    51,408.20x = 77,112.30 × 18,165.80
  4. Step 4: Simplify right side
    51,408.20x = 1,400,806,619.34
  5. Step 5: Solve for x
    x = 1,400,806,619.34/51,408.20
  6. Step 6: Final answer
    x = 27,248.70

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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.