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Finding the Fourth Proportional to 50,873.36, 70,202.34 and 28,211

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Solution

The fourth proportional to 50,873.36, 70,202.34 and 28,211 is: 38,929.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,873.36 : 70,202.34 = 28,211 : x
  2. Step 2: Convert to fraction form
    50,873.36/70,202.34 = 28,211/x
  3. Step 3: Cross multiply
    50,873.36x = 70,202.34 × 28,211
  4. Step 4: Simplify right side
    50,873.36x = 1,980,478,213.74
  5. Step 5: Solve for x
    x = 1,980,478,213.74/50,873.36
  6. Step 6: Final answer
    x = 38,929.57

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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.