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Finding the Fourth Proportional to 64,958.45, 89,642.96 and 35,150.45

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Solution

The fourth proportional to 64,958.45, 89,642.96 and 35,150.45 is: 48,507.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,958.45 : 89,642.96 = 35,150.45 : x
  2. Step 2: Convert to fraction form
    64,958.45/89,642.96 = 35,150.45/x
  3. Step 3: Cross multiply
    64,958.45x = 89,642.96 × 35,150.45
  4. Step 4: Simplify right side
    64,958.45x = 3,150,989,759.36
  5. Step 5: Solve for x
    x = 3,150,989,759.36/64,958.45
  6. Step 6: Final answer
    x = 48,507.78

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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.