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Finding the Fourth Proportional to 64,968.11, 89,650.15 and 36,283.78

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Solution

The fourth proportional to 64,968.11, 89,650.15 and 36,283.78 is: 50,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968.11 : 89,650.15 = 36,283.78 : x
  2. Step 2: Convert to fraction form
    64,968.11/89,650.15 = 36,283.78/x
  3. Step 3: Cross multiply
    64,968.11x = 89,650.15 × 36,283.78
  4. Step 4: Simplify right side
    64,968.11x = 3,252,846,319.57
  5. Step 5: Solve for x
    x = 3,252,846,319.57/64,968.11
  6. Step 6: Final answer
    x = 50,068.35

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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.