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Finding the Fourth Proportional to 66,400.06, 99,600 and 30,841.90

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Solution

The fourth proportional to 66,400.06, 99,600 and 30,841.90 is: 46,262.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.06 : 99,600 = 30,841.90 : x
  2. Step 2: Convert to fraction form
    66,400.06/99,600 = 30,841.90/x
  3. Step 3: Cross multiply
    66,400.06x = 99,600 × 30,841.90
  4. Step 4: Simplify right side
    66,400.06x = 3,071,853,240
  5. Step 5: Solve for x
    x = 3,071,853,240/66,400.06
  6. Step 6: Final answer
    x = 46,262.81

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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.