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Finding the Fourth Proportional to 66,641.85, 91,968.21 and 36,429.19

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Solution

The fourth proportional to 66,641.85, 91,968.21 and 36,429.19 is: 50,273.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.85 : 91,968.21 = 36,429.19 : x
  2. Step 2: Convert to fraction form
    66,641.85/91,968.21 = 36,429.19/x
  3. Step 3: Cross multiply
    66,641.85x = 91,968.21 × 36,429.19
  4. Step 4: Simplify right side
    66,641.85x = 3,350,327,166.13
  5. Step 5: Solve for x
    x = 3,350,327,166.13/66,641.85
  6. Step 6: Final answer
    x = 50,273.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.