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Finding the Fourth Proportional to 65,905.63, 90,949.63 and 35,690.94

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Solution

The fourth proportional to 65,905.63, 90,949.63 and 35,690.94 is: 49,253.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,905.63 : 90,949.63 = 35,690.94 : x
  2. Step 2: Convert to fraction form
    65,905.63/90,949.63 = 35,690.94/x
  3. Step 3: Cross multiply
    65,905.63x = 90,949.63 × 35,690.94
  4. Step 4: Simplify right side
    65,905.63x = 3,246,077,787.35
  5. Step 5: Solve for x
    x = 3,246,077,787.35/65,905.63
  6. Step 6: Final answer
    x = 49,253.42

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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.