Home / 85,544.12-128,205.20-38,091.69

Finding the Fourth Proportional to 85,544.12, 128,205.20 and 38,091.69

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Solution

The fourth proportional to 85,544.12, 128,205.20 and 38,091.69 is: 57,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,544.12 : 128,205.20 = 38,091.69 : x
  2. Step 2: Convert to fraction form
    85,544.12/128,205.20 = 38,091.69/x
  3. Step 3: Cross multiply
    85,544.12x = 128,205.20 × 38,091.69
  4. Step 4: Simplify right side
    85,544.12x = 4,883,552,093.76
  5. Step 5: Solve for x
    x = 4,883,552,093.76/85,544.12
  6. Step 6: Final answer
    x = 57,088.11

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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.