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Finding the Fourth Proportional to 68,696.78, 94,639.71 and 64,563.35

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Solution

The fourth proportional to 68,696.78, 94,639.71 and 64,563.35 is: 88,945.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,696.78 : 94,639.71 = 64,563.35 : x
  2. Step 2: Convert to fraction form
    68,696.78/94,639.71 = 64,563.35/x
  3. Step 3: Cross multiply
    68,696.78x = 94,639.71 × 64,563.35
  4. Step 4: Simplify right side
    68,696.78x = 6,110,256,720.63
  5. Step 5: Solve for x
    x = 6,110,256,720.63/68,696.78
  6. Step 6: Final answer
    x = 88,945.31

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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.