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Finding the Fourth Proportional to 68,662.45, 102,895.23 and 39,017.65

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Solution

The fourth proportional to 68,662.45, 102,895.23 and 39,017.65 is: 58,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,662.45 : 102,895.23 = 39,017.65 : x
  2. Step 2: Convert to fraction form
    68,662.45/102,895.23 = 39,017.65/x
  3. Step 3: Cross multiply
    68,662.45x = 102,895.23 × 39,017.65
  4. Step 4: Simplify right side
    68,662.45x = 4,014,730,070.81
  5. Step 5: Solve for x
    x = 4,014,730,070.81/68,662.45
  6. Step 6: Final answer
    x = 58,470.53

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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.