Home / 42,709.70-64,028.09-30,190.34

Finding the Fourth Proportional to 42,709.70, 64,028.09 and 30,190.34

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Solution

The fourth proportional to 42,709.70, 64,028.09 and 30,190.34 is: 45,259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,709.70 : 64,028.09 = 30,190.34 : x
  2. Step 2: Convert to fraction form
    42,709.70/64,028.09 = 30,190.34/x
  3. Step 3: Cross multiply
    42,709.70x = 64,028.09 × 30,190.34
  4. Step 4: Simplify right side
    42,709.70x = 1,933,029,512.22
  5. Step 5: Solve for x
    x = 1,933,029,512.22/42,709.70
  6. Step 6: Final answer
    x = 45,259.73

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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.