Home / 86,143.14-129,213.09-46,949.67

Finding the Fourth Proportional to 86,143.14, 129,213.09 and 46,949.67

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Solution

The fourth proportional to 86,143.14, 129,213.09 and 46,949.67 is: 70,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.14 : 129,213.09 = 46,949.67 : x
  2. Step 2: Convert to fraction form
    86,143.14/129,213.09 = 46,949.67/x
  3. Step 3: Cross multiply
    86,143.14x = 129,213.09 × 46,949.67
  4. Step 4: Simplify right side
    86,143.14x = 6,066,511,935.18
  5. Step 5: Solve for x
    x = 6,066,511,935.18/86,143.14
  6. Step 6: Final answer
    x = 70,423.62

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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.