Home / 65,690.57-90,546.51-51,325.34

Finding the Fourth Proportional to 65,690.57, 90,546.51 and 51,325.34

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Solution

The fourth proportional to 65,690.57, 90,546.51 and 51,325.34 is: 70,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,690.57 : 90,546.51 = 51,325.34 : x
  2. Step 2: Convert to fraction form
    65,690.57/90,546.51 = 51,325.34/x
  3. Step 3: Cross multiply
    65,690.57x = 90,546.51 × 51,325.34
  4. Step 4: Simplify right side
    65,690.57x = 4,647,330,798.90
  5. Step 5: Solve for x
    x = 4,647,330,798.90/65,690.57
  6. Step 6: Final answer
    x = 70,745.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.