Home / 51,408.03-77,112.04-28,920.20

Finding the Fourth Proportional to 51,408.03, 77,112.04 and 28,920.20

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Solution

The fourth proportional to 51,408.03, 77,112.04 and 28,920.20 is: 43,380.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,408.03 : 77,112.04 = 28,920.20 : x
  2. Step 2: Convert to fraction form
    51,408.03/77,112.04 = 28,920.20/x
  3. Step 3: Cross multiply
    51,408.03x = 77,112.04 × 28,920.20
  4. Step 4: Simplify right side
    51,408.03x = 2,230,095,474.61
  5. Step 5: Solve for x
    x = 2,230,095,474.61/51,408.03
  6. Step 6: Final answer
    x = 43,380.29

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1.5x scale

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.