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Finding the Fourth Proportional to 79,668.42, 109,938.13 and 45,675.25

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Solution

The fourth proportional to 79,668.42, 109,938.13 and 45,675.25 is: 63,029.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,668.42 : 109,938.13 = 45,675.25 : x
  2. Step 2: Convert to fraction form
    79,668.42/109,938.13 = 45,675.25/x
  3. Step 3: Cross multiply
    79,668.42x = 109,938.13 × 45,675.25
  4. Step 4: Simplify right side
    79,668.42x = 5,021,451,183.25
  5. Step 5: Solve for x
    x = 5,021,451,183.25/79,668.42
  6. Step 6: Final answer
    x = 63,029.38

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1.5x scale

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.