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Finding the Fourth Proportional to 43,626.81, 65,455.80 and 21,455.75

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Solution

The fourth proportional to 43,626.81, 65,455.80 and 21,455.75 is: 32,191.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,626.81 : 65,455.80 = 21,455.75 : x
  2. Step 2: Convert to fraction form
    43,626.81/65,455.80 = 21,455.75/x
  3. Step 3: Cross multiply
    43,626.81x = 65,455.80 × 21,455.75
  4. Step 4: Simplify right side
    43,626.81x = 1,404,403,362.88
  5. Step 5: Solve for x
    x = 1,404,403,362.88/43,626.81
  6. Step 6: Final answer
    x = 32,191.29

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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.