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Finding the Fourth Proportional to 85,765.80, 128,372.22 and 44,155.56

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Solution

The fourth proportional to 85,765.80, 128,372.22 and 44,155.56 is: 66,091.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,765.80 : 128,372.22 = 44,155.56 : x
  2. Step 2: Convert to fraction form
    85,765.80/128,372.22 = 44,155.56/x
  3. Step 3: Cross multiply
    85,765.80x = 128,372.22 × 44,155.56
  4. Step 4: Simplify right side
    85,765.80x = 5,668,347,262.54
  5. Step 5: Solve for x
    x = 5,668,347,262.54/85,765.80
  6. Step 6: Final answer
    x = 66,091.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.