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Finding the Fourth Proportional to 43,755.60, 65,633.40 and 21,579.60

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Solution

The fourth proportional to 43,755.60, 65,633.40 and 21,579.60 is: 32,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,755.60 : 65,633.40 = 21,579.60 : x
  2. Step 2: Convert to fraction form
    43,755.60/65,633.40 = 21,579.60/x
  3. Step 3: Cross multiply
    43,755.60x = 65,633.40 × 21,579.60
  4. Step 4: Simplify right side
    43,755.60x = 1,416,342,518.64
  5. Step 5: Solve for x
    x = 1,416,342,518.64/43,755.60
  6. Step 6: Final answer
    x = 32,369.40

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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.