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Finding the Fourth Proportional to 64,662.60, 89,183.75 and 42,008.84

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Solution

The fourth proportional to 64,662.60, 89,183.75 and 42,008.84 is: 57,939.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,662.60 : 89,183.75 = 42,008.84 : x
  2. Step 2: Convert to fraction form
    64,662.60/89,183.75 = 42,008.84/x
  3. Step 3: Cross multiply
    64,662.60x = 89,183.75 × 42,008.84
  4. Step 4: Simplify right side
    64,662.60x = 3,746,505,884.35
  5. Step 5: Solve for x
    x = 3,746,505,884.35/64,662.60
  6. Step 6: Final answer
    x = 57,939.30

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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.