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Finding the Fourth Proportional to 55,208.80, 82,814.56 and 20,148.44

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Solution

The fourth proportional to 55,208.80, 82,814.56 and 20,148.44 is: 30,223.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,208.80 : 82,814.56 = 20,148.44 : x
  2. Step 2: Convert to fraction form
    55,208.80/82,814.56 = 20,148.44/x
  3. Step 3: Cross multiply
    55,208.80x = 82,814.56 × 20,148.44
  4. Step 4: Simplify right side
    55,208.80x = 1,668,584,193.29
  5. Step 5: Solve for x
    x = 1,668,584,193.29/55,208.80
  6. Step 6: Final answer
    x = 30,223.16

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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.