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Finding the Fourth Proportional to 65,811.62, 90,820.04 and 37,137.35

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Solution

The fourth proportional to 65,811.62, 90,820.04 and 37,137.35 is: 51,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,811.62 : 90,820.04 = 37,137.35 : x
  2. Step 2: Convert to fraction form
    65,811.62/90,820.04 = 37,137.35/x
  3. Step 3: Cross multiply
    65,811.62x = 90,820.04 × 37,137.35
  4. Step 4: Simplify right side
    65,811.62x = 3,372,815,653.86
  5. Step 5: Solve for x
    x = 3,372,815,653.86/65,811.62
  6. Step 6: Final answer
    x = 51,249.54

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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.