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Finding the Fourth Proportional to 81,632.81, 122,449.22 and 29,042.45

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Solution

The fourth proportional to 81,632.81, 122,449.22 and 29,042.45 is: 43,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,632.81 : 122,449.22 = 29,042.45 : x
  2. Step 2: Convert to fraction form
    81,632.81/122,449.22 = 29,042.45/x
  3. Step 3: Cross multiply
    81,632.81x = 122,449.22 × 29,042.45
  4. Step 4: Simplify right side
    81,632.81x = 3,556,225,160.02
  5. Step 5: Solve for x
    x = 3,556,225,160.02/81,632.81
  6. Step 6: Final answer
    x = 43,563.67

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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.