Home / 66,310.40-99,379.20-30,767.60

Finding the Fourth Proportional to 66,310.40, 99,379.20 and 30,767.60

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Solution

The fourth proportional to 66,310.40, 99,379.20 and 30,767.60 is: 46,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,310.40 : 99,379.20 = 30,767.60 : x
  2. Step 2: Convert to fraction form
    66,310.40/99,379.20 = 30,767.60/x
  3. Step 3: Cross multiply
    66,310.40x = 99,379.20 × 30,767.60
  4. Step 4: Simplify right side
    66,310.40x = 3,057,659,473.92
  5. Step 5: Solve for x
    x = 3,057,659,473.92/66,310.40
  6. Step 6: Final answer
    x = 46,111.31

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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.