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Finding the Fourth Proportional to 51,003.36, 70,398 and 28,654.56

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Solution

The fourth proportional to 51,003.36, 70,398 and 28,654.56 is: 39,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,003.36 : 70,398 = 28,654.56 : x
  2. Step 2: Convert to fraction form
    51,003.36/70,398 = 28,654.56/x
  3. Step 3: Cross multiply
    51,003.36x = 70,398 × 28,654.56
  4. Step 4: Simplify right side
    51,003.36x = 2,017,223,714.88
  5. Step 5: Solve for x
    x = 2,017,223,714.88/51,003.36
  6. Step 6: Final answer
    x = 39,550.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.