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Finding the Fourth Proportional to 43,404.30, 65,110.05 and 13,821.30

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Solution

The fourth proportional to 43,404.30, 65,110.05 and 13,821.30 is: 20,733.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,404.30 : 65,110.05 = 13,821.30 : x
  2. Step 2: Convert to fraction form
    43,404.30/65,110.05 = 13,821.30/x
  3. Step 3: Cross multiply
    43,404.30x = 65,110.05 × 13,821.30
  4. Step 4: Simplify right side
    43,404.30x = 899,905,534.07
  5. Step 5: Solve for x
    x = 899,905,534.07/43,404.30
  6. Step 6: Final answer
    x = 20,733.10

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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.