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Finding the Fourth Proportional to 68,402.88, 102,768.72 and 64,626.48

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Solution

The fourth proportional to 68,402.88, 102,768.72 and 64,626.48 is: 97,095.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,402.88 : 102,768.72 = 64,626.48 : x
  2. Step 2: Convert to fraction form
    68,402.88/102,768.72 = 64,626.48/x
  3. Step 3: Cross multiply
    68,402.88x = 102,768.72 × 64,626.48
  4. Step 4: Simplify right side
    68,402.88x = 6,641,580,627.71
  5. Step 5: Solve for x
    x = 6,641,580,627.71/68,402.88
  6. Step 6: Final answer
    x = 97,095.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.