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Finding the Fourth Proportional to 68,969.94, 95,189.61 and 64,467.50

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Solution

The fourth proportional to 68,969.94, 95,189.61 and 64,467.50 is: 88,975.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,969.94 : 95,189.61 = 64,467.50 : x
  2. Step 2: Convert to fraction form
    68,969.94/95,189.61 = 64,467.50/x
  3. Step 3: Cross multiply
    68,969.94x = 95,189.61 × 64,467.50
  4. Step 4: Simplify right side
    68,969.94x = 6,136,636,182.68
  5. Step 5: Solve for x
    x = 6,136,636,182.68/68,969.94
  6. Step 6: Final answer
    x = 88,975.52

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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.