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Finding the Fourth Proportional to 79,653.43, 109,920.87 and 43,842.67

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Solution

The fourth proportional to 79,653.43, 109,920.87 and 43,842.67 is: 60,502.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653.43 : 109,920.87 = 43,842.67 : x
  2. Step 2: Convert to fraction form
    79,653.43/109,920.87 = 43,842.67/x
  3. Step 3: Cross multiply
    79,653.43x = 109,920.87 × 43,842.67
  4. Step 4: Simplify right side
    79,653.43x = 4,819,224,429.52
  5. Step 5: Solve for x
    x = 4,819,224,429.52/79,653.43
  6. Step 6: Final answer
    x = 60,502.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.