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Finding the Fourth Proportional to 66,898.92, 100,328.94 and 43,648.68

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Solution

The fourth proportional to 66,898.92, 100,328.94 and 43,648.68 is: 65,460.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,898.92 : 100,328.94 = 43,648.68 : x
  2. Step 2: Convert to fraction form
    66,898.92/100,328.94 = 43,648.68/x
  3. Step 3: Cross multiply
    66,898.92x = 100,328.94 × 43,648.68
  4. Step 4: Simplify right side
    66,898.92x = 4,379,225,796.80
  5. Step 5: Solve for x
    x = 4,379,225,796.80/66,898.92
  6. Step 6: Final answer
    x = 65,460.34

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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.