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Finding the Fourth Proportional to 68,470.60, 102,705.90 and 62,768.20

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Solution

The fourth proportional to 68,470.60, 102,705.90 and 62,768.20 is: 94,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,470.60 : 102,705.90 = 62,768.20 : x
  2. Step 2: Convert to fraction form
    68,470.60/102,705.90 = 62,768.20/x
  3. Step 3: Cross multiply
    68,470.60x = 102,705.90 × 62,768.20
  4. Step 4: Simplify right side
    68,470.60x = 6,446,664,472.38
  5. Step 5: Solve for x
    x = 6,446,664,472.38/68,470.60
  6. Step 6: Final answer
    x = 94,152.30

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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.