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Finding the Fourth Proportional to 43,980.62, 65,979.03 and 14,400.09

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Solution

The fourth proportional to 43,980.62, 65,979.03 and 14,400.09 is: 21,602.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,980.62 : 65,979.03 = 14,400.09 : x
  2. Step 2: Convert to fraction form
    43,980.62/65,979.03 = 14,400.09/x
  3. Step 3: Cross multiply
    43,980.62x = 65,979.03 × 14,400.09
  4. Step 4: Simplify right side
    43,980.62x = 950,103,970.11
  5. Step 5: Solve for x
    x = 950,103,970.11/43,980.62
  6. Step 6: Final answer
    x = 21,602.79

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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.