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Finding the Fourth Proportional to 61,899.12, 85,441.10 and 36,404.37

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Solution

The fourth proportional to 61,899.12, 85,441.10 and 36,404.37 is: 50,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.12 : 85,441.10 = 36,404.37 : x
  2. Step 2: Convert to fraction form
    61,899.12/85,441.10 = 36,404.37/x
  3. Step 3: Cross multiply
    61,899.12x = 85,441.10 × 36,404.37
  4. Step 4: Simplify right side
    61,899.12x = 3,110,429,235.59
  5. Step 5: Solve for x
    x = 3,110,429,235.59/61,899.12
  6. Step 6: Final answer
    x = 50,249.98

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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.