Home / 66,021-91,107.36-37,724.88

Finding the Fourth Proportional to 66,021, 91,107.36 and 37,724.88

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Solution

The fourth proportional to 66,021, 91,107.36 and 37,724.88 is: 52,059.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021 : 91,107.36 = 37,724.88 : x
  2. Step 2: Convert to fraction form
    66,021/91,107.36 = 37,724.88/x
  3. Step 3: Cross multiply
    66,021x = 91,107.36 × 37,724.88
  4. Step 4: Simplify right side
    66,021x = 3,437,014,223.12
  5. Step 5: Solve for x
    x = 3,437,014,223.12/66,021
  6. Step 6: Final answer
    x = 52,059.41

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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.