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Finding the Fourth Proportional to 66,674.68, 100,039.62 and 29,215.40

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Solution

The fourth proportional to 66,674.68, 100,039.62 and 29,215.40 is: 43,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,674.68 : 100,039.62 = 29,215.40 : x
  2. Step 2: Convert to fraction form
    66,674.68/100,039.62 = 29,215.40/x
  3. Step 3: Cross multiply
    66,674.68x = 100,039.62 × 29,215.40
  4. Step 4: Simplify right side
    66,674.68x = 2,922,697,514.15
  5. Step 5: Solve for x
    x = 2,922,697,514.15/66,674.68
  6. Step 6: Final answer
    x = 43,835.19

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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.