Home / 65,807.16-90,819.66-38,936.12

Finding the Fourth Proportional to 65,807.16, 90,819.66 and 38,936.12

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Solution

The fourth proportional to 65,807.16, 90,819.66 and 38,936.12 is: 53,735.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,807.16 : 90,819.66 = 38,936.12 : x
  2. Step 2: Convert to fraction form
    65,807.16/90,819.66 = 38,936.12/x
  3. Step 3: Cross multiply
    65,807.16x = 90,819.66 × 38,936.12
  4. Step 4: Simplify right side
    65,807.16x = 3,536,165,180.12
  5. Step 5: Solve for x
    x = 3,536,165,180.12/65,807.16
  6. Step 6: Final answer
    x = 53,735.26

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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.