Home / 85,501.70-128,252.55-41,105.60

Finding the Fourth Proportional to 85,501.70, 128,252.55 and 41,105.60

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Solution

The fourth proportional to 85,501.70, 128,252.55 and 41,105.60 is: 61,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.70 : 128,252.55 = 41,105.60 : x
  2. Step 2: Convert to fraction form
    85,501.70/128,252.55 = 41,105.60/x
  3. Step 3: Cross multiply
    85,501.70x = 128,252.55 × 41,105.60
  4. Step 4: Simplify right side
    85,501.70x = 5,271,898,019.28
  5. Step 5: Solve for x
    x = 5,271,898,019.28/85,501.70
  6. Step 6: Final answer
    x = 61,658.40

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Similar ratio
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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.