Home / 66,100.28-91,176.84-39,223.76

Finding the Fourth Proportional to 66,100.28, 91,176.84 and 39,223.76

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Solution

The fourth proportional to 66,100.28, 91,176.84 and 39,223.76 is: 54,104.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,100.28 : 91,176.84 = 39,223.76 : x
  2. Step 2: Convert to fraction form
    66,100.28/91,176.84 = 39,223.76/x
  3. Step 3: Cross multiply
    66,100.28x = 91,176.84 × 39,223.76
  4. Step 4: Simplify right side
    66,100.28x = 3,576,298,489.72
  5. Step 5: Solve for x
    x = 3,576,298,489.72/66,100.28
  6. Step 6: Final answer
    x = 54,104.14

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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.