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Finding the Fourth Proportional to 61,604.64, 85,037.40 and 47,965.68

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Solution

The fourth proportional to 61,604.64, 85,037.40 and 47,965.68 is: 66,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,604.64 : 85,037.40 = 47,965.68 : x
  2. Step 2: Convert to fraction form
    61,604.64/85,037.40 = 47,965.68/x
  3. Step 3: Cross multiply
    61,604.64x = 85,037.40 × 47,965.68
  4. Step 4: Simplify right side
    61,604.64x = 4,078,876,716.43
  5. Step 5: Solve for x
    x = 4,078,876,716.43/61,604.64
  6. Step 6: Final answer
    x = 66,210.54

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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.