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Finding the Fourth Proportional to 50,021.40, 75,007.80 and 27,811.20

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Solution

The fourth proportional to 50,021.40, 75,007.80 and 27,811.20 is: 41,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,021.40 : 75,007.80 = 27,811.20 : x
  2. Step 2: Convert to fraction form
    50,021.40/75,007.80 = 27,811.20/x
  3. Step 3: Cross multiply
    50,021.40x = 75,007.80 × 27,811.20
  4. Step 4: Simplify right side
    50,021.40x = 2,086,056,927.36
  5. Step 5: Solve for x
    x = 2,086,056,927.36/50,021.40
  6. Step 6: Final answer
    x = 41,703.29

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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.