Home / 66,943.08-100,415.34-20,196.36

Finding the Fourth Proportional to 66,943.08, 100,415.34 and 20,196.36

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Solution

The fourth proportional to 66,943.08, 100,415.34 and 20,196.36 is: 30,294.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,943.08 : 100,415.34 = 20,196.36 : x
  2. Step 2: Convert to fraction form
    66,943.08/100,415.34 = 20,196.36/x
  3. Step 3: Cross multiply
    66,943.08x = 100,415.34 × 20,196.36
  4. Step 4: Simplify right side
    66,943.08x = 2,028,024,356.16
  5. Step 5: Solve for x
    x = 2,028,024,356.16/66,943.08
  6. Step 6: Final answer
    x = 30,294.76

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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.