Home / 81,389.14-122,085.33-53,487.07

Finding the Fourth Proportional to 81,389.14, 122,085.33 and 53,487.07

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Solution

The fourth proportional to 81,389.14, 122,085.33 and 53,487.07 is: 80,231.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,389.14 : 122,085.33 = 53,487.07 : x
  2. Step 2: Convert to fraction form
    81,389.14/122,085.33 = 53,487.07/x
  3. Step 3: Cross multiply
    81,389.14x = 122,085.33 × 53,487.07
  4. Step 4: Simplify right side
    81,389.14x = 6,529,986,591.68
  5. Step 5: Solve for x
    x = 6,529,986,591.68/81,389.14
  6. Step 6: Final answer
    x = 80,231.67

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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.