Home / 65,913.21-90,961.79-37,621.53

Finding the Fourth Proportional to 65,913.21, 90,961.79 and 37,621.53

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Solution

The fourth proportional to 65,913.21, 90,961.79 and 37,621.53 is: 51,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,913.21 : 90,961.79 = 37,621.53 : x
  2. Step 2: Convert to fraction form
    65,913.21/90,961.79 = 37,621.53/x
  3. Step 3: Cross multiply
    65,913.21x = 90,961.79 × 37,621.53
  4. Step 4: Simplify right side
    65,913.21x = 3,422,121,523.23
  5. Step 5: Solve for x
    x = 3,422,121,523.23/65,913.21
  6. Step 6: Final answer
    x = 51,918.60

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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.