Home / 65,745.16-90,734.67-38,896.30

Finding the Fourth Proportional to 65,745.16, 90,734.67 and 38,896.30

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Solution

The fourth proportional to 65,745.16, 90,734.67 and 38,896.30 is: 53,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.16 : 90,734.67 = 38,896.30 : x
  2. Step 2: Convert to fraction form
    65,745.16/90,734.67 = 38,896.30/x
  3. Step 3: Cross multiply
    65,745.16x = 90,734.67 × 38,896.30
  4. Step 4: Simplify right side
    65,745.16x = 3,529,242,944.72
  5. Step 5: Solve for x
    x = 3,529,242,944.72/65,745.16
  6. Step 6: Final answer
    x = 53,680.65

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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.