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Finding the Fourth Proportional to 43,221.60, 64,832.40 and 25,682.40

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Solution

The fourth proportional to 43,221.60, 64,832.40 and 25,682.40 is: 38,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,221.60 : 64,832.40 = 25,682.40 : x
  2. Step 2: Convert to fraction form
    43,221.60/64,832.40 = 25,682.40/x
  3. Step 3: Cross multiply
    43,221.60x = 64,832.40 × 25,682.40
  4. Step 4: Simplify right side
    43,221.60x = 1,665,051,629.76
  5. Step 5: Solve for x
    x = 1,665,051,629.76/43,221.60
  6. Step 6: Final answer
    x = 38,523.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.