Home / 85,610.11-128,383.23-29,434.31

Finding the Fourth Proportional to 85,610.11, 128,383.23 and 29,434.31

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Solution

The fourth proportional to 85,610.11, 128,383.23 and 29,434.31 is: 44,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,610.11 : 128,383.23 = 29,434.31 : x
  2. Step 2: Convert to fraction form
    85,610.11/128,383.23 = 29,434.31/x
  3. Step 3: Cross multiply
    85,610.11x = 128,383.23 × 29,434.31
  4. Step 4: Simplify right side
    85,610.11x = 3,778,871,790.62
  5. Step 5: Solve for x
    x = 3,778,871,790.62/85,610.11
  6. Step 6: Final answer
    x = 44,140.49

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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.