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Finding the Fourth Proportional to 43,891.20, 65,802.24 and 20,494.08

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Solution

The fourth proportional to 43,891.20, 65,802.24 and 20,494.08 is: 30,724.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,891.20 : 65,802.24 = 20,494.08 : x
  2. Step 2: Convert to fraction form
    43,891.20/65,802.24 = 20,494.08/x
  3. Step 3: Cross multiply
    43,891.20x = 65,802.24 × 20,494.08
  4. Step 4: Simplify right side
    43,891.20x = 1,348,556,370.74
  5. Step 5: Solve for x
    x = 1,348,556,370.74/43,891.20
  6. Step 6: Final answer
    x = 30,724.98

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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.