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Finding the Fourth Proportional to 50,879.69, 70,210.48 and 28,216.55

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Solution

The fourth proportional to 50,879.69, 70,210.48 and 28,216.55 is: 38,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,879.69 : 70,210.48 = 28,216.55 : x
  2. Step 2: Convert to fraction form
    50,879.69/70,210.48 = 28,216.55/x
  3. Step 3: Cross multiply
    50,879.69x = 70,210.48 × 28,216.55
  4. Step 4: Simplify right side
    50,879.69x = 1,981,097,282.40
  5. Step 5: Solve for x
    x = 1,981,097,282.40/50,879.69
  6. Step 6: Final answer
    x = 38,936.90

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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.