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Finding the Fourth Proportional to 50,855.81, 70,185.15 and 28,201.90

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Solution

The fourth proportional to 50,855.81, 70,185.15 and 28,201.90 is: 38,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,855.81 : 70,185.15 = 28,201.90 : x
  2. Step 2: Convert to fraction form
    50,855.81/70,185.15 = 28,201.90/x
  3. Step 3: Cross multiply
    50,855.81x = 70,185.15 × 28,201.90
  4. Step 4: Simplify right side
    50,855.81x = 1,979,354,581.79
  5. Step 5: Solve for x
    x = 1,979,354,581.79/50,855.81
  6. Step 6: Final answer
    x = 38,920.91

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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.