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Finding the Fourth Proportional to 66,989.91, 100,330.83 and 37,342.09

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Solution

The fourth proportional to 66,989.91, 100,330.83 and 37,342.09 is: 55,927.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,989.91 : 100,330.83 = 37,342.09 : x
  2. Step 2: Convert to fraction form
    66,989.91/100,330.83 = 37,342.09/x
  3. Step 3: Cross multiply
    66,989.91x = 100,330.83 × 37,342.09
  4. Step 4: Simplify right side
    66,989.91x = 3,746,562,883.63
  5. Step 5: Solve for x
    x = 3,746,562,883.63/66,989.91
  6. Step 6: Final answer
    x = 55,927.27

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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.