Home / 85,317.20-127,812.60-45,861.20

Finding the Fourth Proportional to 85,317.20, 127,812.60 and 45,861.20

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Solution

The fourth proportional to 85,317.20, 127,812.60 and 45,861.20 is: 68,704.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,317.20 : 127,812.60 = 45,861.20 : x
  2. Step 2: Convert to fraction form
    85,317.20/127,812.60 = 45,861.20/x
  3. Step 3: Cross multiply
    85,317.20x = 127,812.60 × 45,861.20
  4. Step 4: Simplify right side
    85,317.20x = 5,861,639,211.12
  5. Step 5: Solve for x
    x = 5,861,639,211.12/85,317.20
  6. Step 6: Final answer
    x = 68,704.07

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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.