Home / 50,001.21-75,001.88-20,419.05

Finding the Fourth Proportional to 50,001.21, 75,001.88 and 20,419.05

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Solution

The fourth proportional to 50,001.21, 75,001.88 and 20,419.05 is: 30,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,001.21 : 75,001.88 = 20,419.05 : x
  2. Step 2: Convert to fraction form
    50,001.21/75,001.88 = 20,419.05/x
  3. Step 3: Cross multiply
    50,001.21x = 75,001.88 × 20,419.05
  4. Step 4: Simplify right side
    50,001.21x = 1,531,467,188.86
  5. Step 5: Solve for x
    x = 1,531,467,188.86/50,001.21
  6. Step 6: Final answer
    x = 30,628.60

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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.