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Finding the Fourth Proportional to 64,520.55, 89,022.78 and 37,647.72

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Solution

The fourth proportional to 64,520.55, 89,022.78 and 37,647.72 is: 51,944.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,520.55 : 89,022.78 = 37,647.72 : x
  2. Step 2: Convert to fraction form
    64,520.55/89,022.78 = 37,647.72/x
  3. Step 3: Cross multiply
    64,520.55x = 89,022.78 × 37,647.72
  4. Step 4: Simplify right side
    64,520.55x = 3,351,504,695.06
  5. Step 5: Solve for x
    x = 3,351,504,695.06/64,520.55
  6. Step 6: Final answer
    x = 51,944.76

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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.