Home / 85,622.58-128,379.20-41,160.87

Finding the Fourth Proportional to 85,622.58, 128,379.20 and 41,160.87

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Solution

The fourth proportional to 85,622.58, 128,379.20 and 41,160.87 is: 61,715.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,622.58 : 128,379.20 = 41,160.87 : x
  2. Step 2: Convert to fraction form
    85,622.58/128,379.20 = 41,160.87/x
  3. Step 3: Cross multiply
    85,622.58x = 128,379.20 × 41,160.87
  4. Step 4: Simplify right side
    85,622.58x = 5,284,199,356.10
  5. Step 5: Solve for x
    x = 5,284,199,356.10/85,622.58
  6. Step 6: Final answer
    x = 61,715.02

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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.