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Finding the Fourth Proportional to 55,448.58, 83,205.81 and 20,412.84

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Solution

The fourth proportional to 55,448.58, 83,205.81 and 20,412.84 is: 30,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,448.58 : 83,205.81 = 20,412.84 : x
  2. Step 2: Convert to fraction form
    55,448.58/83,205.81 = 20,412.84/x
  3. Step 3: Cross multiply
    55,448.58x = 83,205.81 × 20,412.84
  4. Step 4: Simplify right side
    55,448.58x = 1,698,466,886.60
  5. Step 5: Solve for x
    x = 1,698,466,886.60/55,448.58
  6. Step 6: Final answer
    x = 30,631.39

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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.