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Finding the Fourth Proportional to 43,656.20, 65,441.10 and 21,451.40

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Solution

The fourth proportional to 43,656.20, 65,441.10 and 21,451.40 is: 32,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,656.20 : 65,441.10 = 21,451.40 : x
  2. Step 2: Convert to fraction form
    43,656.20/65,441.10 = 21,451.40/x
  3. Step 3: Cross multiply
    43,656.20x = 65,441.10 × 21,451.40
  4. Step 4: Simplify right side
    43,656.20x = 1,403,803,212.54
  5. Step 5: Solve for x
    x = 1,403,803,212.54/43,656.20
  6. Step 6: Final answer
    x = 32,155.87

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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.