Home / 66,386.89-91,612.74-36,172.46

Finding the Fourth Proportional to 66,386.89, 91,612.74 and 36,172.46

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Solution

The fourth proportional to 66,386.89, 91,612.74 and 36,172.46 is: 49,917.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.89 : 91,612.74 = 36,172.46 : x
  2. Step 2: Convert to fraction form
    66,386.89/91,612.74 = 36,172.46/x
  3. Step 3: Cross multiply
    66,386.89x = 91,612.74 × 36,172.46
  4. Step 4: Simplify right side
    66,386.89x = 3,313,858,022.50
  5. Step 5: Solve for x
    x = 3,313,858,022.50/66,386.89
  6. Step 6: Final answer
    x = 49,917.36

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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.