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Finding the Fourth Proportional to 65,021.25, 89,736.63 and 36,728.76

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Solution

The fourth proportional to 65,021.25, 89,736.63 and 36,728.76 is: 50,689.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,021.25 : 89,736.63 = 36,728.76 : x
  2. Step 2: Convert to fraction form
    65,021.25/89,736.63 = 36,728.76/x
  3. Step 3: Cross multiply
    65,021.25x = 89,736.63 × 36,728.76
  4. Step 4: Simplify right side
    65,021.25x = 3,295,915,146.48
  5. Step 5: Solve for x
    x = 3,295,915,146.48/65,021.25
  6. Step 6: Final answer
    x = 50,689.82

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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.