Home / 79,660.20-109,926-45,668.28

Finding the Fourth Proportional to 79,660.20, 109,926 and 45,668.28

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Solution

The fourth proportional to 79,660.20, 109,926 and 45,668.28 is: 63,019.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.20 : 109,926 = 45,668.28 : x
  2. Step 2: Convert to fraction form
    79,660.20/109,926 = 45,668.28/x
  3. Step 3: Cross multiply
    79,660.20x = 109,926 × 45,668.28
  4. Step 4: Simplify right side
    79,660.20x = 5,020,131,347.28
  5. Step 5: Solve for x
    x = 5,020,131,347.28/79,660.20
  6. Step 6: Final answer
    x = 63,019.32

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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.