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Finding the Fourth Proportional to 43,980.22, 65,945.76 and 14,390.11

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Solution

The fourth proportional to 43,980.22, 65,945.76 and 14,390.11 is: 21,577.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,980.22 : 65,945.76 = 14,390.11 : x
  2. Step 2: Convert to fraction form
    43,980.22/65,945.76 = 14,390.11/x
  3. Step 3: Cross multiply
    43,980.22x = 65,945.76 × 14,390.11
  4. Step 4: Simplify right side
    43,980.22x = 948,966,740.43
  5. Step 5: Solve for x
    x = 948,966,740.43/43,980.22
  6. Step 6: Final answer
    x = 21,577.13

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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.