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Finding the Fourth Proportional to 64,647.35, 89,211.64 and 35,965.56

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Solution

The fourth proportional to 64,647.35, 89,211.64 and 35,965.56 is: 49,631.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,647.35 : 89,211.64 = 35,965.56 : x
  2. Step 2: Convert to fraction form
    64,647.35/89,211.64 = 35,965.56/x
  3. Step 3: Cross multiply
    64,647.35x = 89,211.64 × 35,965.56
  4. Step 4: Simplify right side
    64,647.35x = 3,208,546,591.12
  5. Step 5: Solve for x
    x = 3,208,546,591.12/64,647.35
  6. Step 6: Final answer
    x = 49,631.53

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1.5x scale

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.