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Finding the Fourth Proportional to 43,703, 65,553.60 and 14,145.20

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Solution

The fourth proportional to 43,703, 65,553.60 and 14,145.20 is: 21,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,703 : 65,553.60 = 14,145.20 : x
  2. Step 2: Convert to fraction form
    43,703/65,553.60 = 14,145.20/x
  3. Step 3: Cross multiply
    43,703x = 65,553.60 × 14,145.20
  4. Step 4: Simplify right side
    43,703x = 927,268,782.72
  5. Step 5: Solve for x
    x = 927,268,782.72/43,703
  6. Step 6: Final answer
    x = 21,217.51

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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.