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Finding the Fourth Proportional to 65,935.37, 90,990.32 and 37,640.99

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Solution

The fourth proportional to 65,935.37, 90,990.32 and 37,640.99 is: 51,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,935.37 : 90,990.32 = 37,640.99 : x
  2. Step 2: Convert to fraction form
    65,935.37/90,990.32 = 37,640.99/x
  3. Step 3: Cross multiply
    65,935.37x = 90,990.32 × 37,640.99
  4. Step 4: Simplify right side
    65,935.37x = 3,424,965,082.06
  5. Step 5: Solve for x
    x = 3,424,965,082.06/65,935.37
  6. Step 6: Final answer
    x = 51,944.28

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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.