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Finding the Fourth Proportional to 40,115.40, 60,108.30 and 25,297.80

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Solution

The fourth proportional to 40,115.40, 60,108.30 and 25,297.80 is: 37,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,115.40 : 60,108.30 = 25,297.80 : x
  2. Step 2: Convert to fraction form
    40,115.40/60,108.30 = 25,297.80/x
  3. Step 3: Cross multiply
    40,115.40x = 60,108.30 × 25,297.80
  4. Step 4: Simplify right side
    40,115.40x = 1,520,607,751.74
  5. Step 5: Solve for x
    x = 1,520,607,751.74/40,115.40
  6. Step 6: Final answer
    x = 37,905.84

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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.