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Finding the Fourth Proportional to 65,880.54, 90,914.94 and 35,665.92

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Solution

The fourth proportional to 65,880.54, 90,914.94 and 35,665.92 is: 49,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,880.54 : 90,914.94 = 35,665.92 : x
  2. Step 2: Convert to fraction form
    65,880.54/90,914.94 = 35,665.92/x
  3. Step 3: Cross multiply
    65,880.54x = 90,914.94 × 35,665.92
  4. Step 4: Simplify right side
    65,880.54x = 3,242,564,976.84
  5. Step 5: Solve for x
    x = 3,242,564,976.84/65,880.54
  6. Step 6: Final answer
    x = 49,218.86

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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.