Home / 86,645.49-129,967.20-27,481.67

Finding the Fourth Proportional to 86,645.49, 129,967.20 and 27,481.67

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Solution

The fourth proportional to 86,645.49, 129,967.20 and 27,481.67 is: 41,222.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,645.49 : 129,967.20 = 27,481.67 : x
  2. Step 2: Convert to fraction form
    86,645.49/129,967.20 = 27,481.67/x
  3. Step 3: Cross multiply
    86,645.49x = 129,967.20 × 27,481.67
  4. Step 4: Simplify right side
    86,645.49x = 3,571,715,538.77
  5. Step 5: Solve for x
    x = 3,571,715,538.77/86,645.49
  6. Step 6: Final answer
    x = 41,222.18

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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.