Home / 65,305.12-90,120.98-38,082.30

Finding the Fourth Proportional to 65,305.12, 90,120.98 and 38,082.30

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Solution

The fourth proportional to 65,305.12, 90,120.98 and 38,082.30 is: 52,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,305.12 : 90,120.98 = 38,082.30 : x
  2. Step 2: Convert to fraction form
    65,305.12/90,120.98 = 38,082.30/x
  3. Step 3: Cross multiply
    65,305.12x = 90,120.98 × 38,082.30
  4. Step 4: Simplify right side
    65,305.12x = 3,432,014,291.86
  5. Step 5: Solve for x
    x = 3,432,014,291.86/65,305.12
  6. Step 6: Final answer
    x = 52,553.53

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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.