Home / 66,201.76-91,353-38,973.52

Finding the Fourth Proportional to 66,201.76, 91,353 and 38,973.52

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Solution

The fourth proportional to 66,201.76, 91,353 and 38,973.52 is: 53,780.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,201.76 : 91,353 = 38,973.52 : x
  2. Step 2: Convert to fraction form
    66,201.76/91,353 = 38,973.52/x
  3. Step 3: Cross multiply
    66,201.76x = 91,353 × 38,973.52
  4. Step 4: Simplify right side
    66,201.76x = 3,560,347,972.56
  5. Step 5: Solve for x
    x = 3,560,347,972.56/66,201.76
  6. Step 6: Final answer
    x = 53,780.26

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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.