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Finding the Fourth Proportional to 68,435.76, 94,506.55 and 64,708.54

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Solution

The fourth proportional to 68,435.76, 94,506.55 and 64,708.54 is: 89,359.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,435.76 : 94,506.55 = 64,708.54 : x
  2. Step 2: Convert to fraction form
    68,435.76/94,506.55 = 64,708.54/x
  3. Step 3: Cross multiply
    68,435.76x = 94,506.55 × 64,708.54
  4. Step 4: Simplify right side
    68,435.76x = 6,115,380,870.94
  5. Step 5: Solve for x
    x = 6,115,380,870.94/68,435.76
  6. Step 6: Final answer
    x = 89,359.44

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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.