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Finding the Fourth Proportional to 43,857.99, 65,795.10 and 13,879.77

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Solution

The fourth proportional to 43,857.99, 65,795.10 and 13,879.77 is: 20,822.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,857.99 : 65,795.10 = 13,879.77 : x
  2. Step 2: Convert to fraction form
    43,857.99/65,795.10 = 13,879.77/x
  3. Step 3: Cross multiply
    43,857.99x = 65,795.10 × 13,879.77
  4. Step 4: Simplify right side
    43,857.99x = 913,220,855.13
  5. Step 5: Solve for x
    x = 913,220,855.13/43,857.99
  6. Step 6: Final answer
    x = 20,822.22

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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.