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Finding the Fourth Proportional to 66,642.78, 91,966.40 and 37,568.50

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Solution

The fourth proportional to 66,642.78, 91,966.40 and 37,568.50 is: 51,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,642.78 : 91,966.40 = 37,568.50 : x
  2. Step 2: Convert to fraction form
    66,642.78/91,966.40 = 37,568.50/x
  3. Step 3: Cross multiply
    66,642.78x = 91,966.40 × 37,568.50
  4. Step 4: Simplify right side
    66,642.78x = 3,455,039,698.40
  5. Step 5: Solve for x
    x = 3,455,039,698.40/66,642.78
  6. Step 6: Final answer
    x = 51,844.17

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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.