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Finding the Fourth Proportional to 65,021.75, 89,737.32 and 36,729.26

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Solution

The fourth proportional to 65,021.75, 89,737.32 and 36,729.26 is: 50,690.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,021.75 : 89,737.32 = 36,729.26 : x
  2. Step 2: Convert to fraction form
    65,021.75/89,737.32 = 36,729.26/x
  3. Step 3: Cross multiply
    65,021.75x = 89,737.32 × 36,729.26
  4. Step 4: Simplify right side
    65,021.75x = 3,295,985,357.98
  5. Step 5: Solve for x
    x = 3,295,985,357.98/65,021.75
  6. Step 6: Final answer
    x = 50,690.51

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1.5x scale

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.