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Finding the Fourth Proportional to 30,169,796.80, 45,204,928.80 and 25,690,820.80

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Solution

The fourth proportional to 30,169,796.80, 45,204,928.80 and 25,690,820.80 is: 38,493,853.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169,796.80 : 45,204,928.80 = 25,690,820.80 : x
  2. Step 2: Convert to fraction form
    30,169,796.80/45,204,928.80 = 25,690,820.80/x
  3. Step 3: Cross multiply
    30,169,796.80x = 45,204,928.80 × 25,690,820.80
  4. Step 4: Simplify right side
    30,169,796.80x = 1,161,351,725,077,559
  5. Step 5: Solve for x
    x = 1,161,351,725,077,559/30,169,796.80
  6. Step 6: Final answer
    x = 38,493,853.07

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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.