Home / 66,386.85-91,612.70-36,172.43

Finding the Fourth Proportional to 66,386.85, 91,612.70 and 36,172.43

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Solution

The fourth proportional to 66,386.85, 91,612.70 and 36,172.43 is: 49,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.85 : 91,612.70 = 36,172.43 : x
  2. Step 2: Convert to fraction form
    66,386.85/91,612.70 = 36,172.43/x
  3. Step 3: Cross multiply
    66,386.85x = 91,612.70 × 36,172.43
  4. Step 4: Simplify right side
    66,386.85x = 3,313,853,338.94
  5. Step 5: Solve for x
    x = 3,313,853,338.94/66,386.85
  6. Step 6: Final answer
    x = 49,917.32

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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.