Home / 66,386.84-91,614.51-36,172.66

Finding the Fourth Proportional to 66,386.84, 91,614.51 and 36,172.66

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Solution

The fourth proportional to 66,386.84, 91,614.51 and 36,172.66 is: 49,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.84 : 91,614.51 = 36,172.66 : x
  2. Step 2: Convert to fraction form
    66,386.84/91,614.51 = 36,172.66/x
  3. Step 3: Cross multiply
    66,386.84x = 91,614.51 × 36,172.66
  4. Step 4: Simplify right side
    66,386.84x = 3,313,940,464.04
  5. Step 5: Solve for x
    x = 3,313,940,464.04/66,386.84
  6. Step 6: Final answer
    x = 49,918.63

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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.