Home / 85,429.70-128,157.87-41,048.18

Finding the Fourth Proportional to 85,429.70, 128,157.87 and 41,048.18

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Solution

The fourth proportional to 85,429.70, 128,157.87 and 41,048.18 is: 61,578.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,429.70 : 128,157.87 = 41,048.18 : x
  2. Step 2: Convert to fraction form
    85,429.70/128,157.87 = 41,048.18/x
  3. Step 3: Cross multiply
    85,429.70x = 128,157.87 × 41,048.18
  4. Step 4: Simplify right side
    85,429.70x = 5,260,647,316.18
  5. Step 5: Solve for x
    x = 5,260,647,316.18/85,429.70
  6. Step 6: Final answer
    x = 61,578.67

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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.