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Finding the Fourth Proportional to 67,287, 100,928.58 and 20,533.08

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Solution

The fourth proportional to 67,287, 100,928.58 and 20,533.08 is: 30,799.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,287 : 100,928.58 = 20,533.08 : x
  2. Step 2: Convert to fraction form
    67,287/100,928.58 = 20,533.08/x
  3. Step 3: Cross multiply
    67,287x = 100,928.58 × 20,533.08
  4. Step 4: Simplify right side
    67,287x = 2,072,374,607.43
  5. Step 5: Solve for x
    x = 2,072,374,607.43/67,287
  6. Step 6: Final answer
    x = 30,799.03

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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.