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Finding the Fourth Proportional to 43,945.76, 65,918.64 and 25,490.72

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Solution

The fourth proportional to 43,945.76, 65,918.64 and 25,490.72 is: 38,236.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,945.76 : 65,918.64 = 25,490.72 : x
  2. Step 2: Convert to fraction form
    43,945.76/65,918.64 = 25,490.72/x
  3. Step 3: Cross multiply
    43,945.76x = 65,918.64 × 25,490.72
  4. Step 4: Simplify right side
    43,945.76x = 1,680,313,595.02
  5. Step 5: Solve for x
    x = 1,680,313,595.02/43,945.76
  6. Step 6: Final answer
    x = 38,236.08

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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.