Home / 85,546.20-128,341.20-35,609.70

Finding the Fourth Proportional to 85,546.20, 128,341.20 and 35,609.70

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Solution

The fourth proportional to 85,546.20, 128,341.20 and 35,609.70 is: 53,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,546.20 : 128,341.20 = 35,609.70 : x
  2. Step 2: Convert to fraction form
    85,546.20/128,341.20 = 35,609.70/x
  3. Step 3: Cross multiply
    85,546.20x = 128,341.20 × 35,609.70
  4. Step 4: Simplify right side
    85,546.20x = 4,570,191,629.64
  5. Step 5: Solve for x
    x = 4,570,191,629.64/85,546.20
  6. Step 6: Final answer
    x = 53,423.67

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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.