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Finding the Fourth Proportional to 64,745.66, 89,399.68 and 50,638.70

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Solution

The fourth proportional to 64,745.66, 89,399.68 and 50,638.70 is: 69,921.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,745.66 : 89,399.68 = 50,638.70 : x
  2. Step 2: Convert to fraction form
    64,745.66/89,399.68 = 50,638.70/x
  3. Step 3: Cross multiply
    64,745.66x = 89,399.68 × 50,638.70
  4. Step 4: Simplify right side
    64,745.66x = 4,527,083,002.02
  5. Step 5: Solve for x
    x = 4,527,083,002.02/64,745.66
  6. Step 6: Final answer
    x = 69,921.03

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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.