Home / 66,958.08-100,437.84-20,211.36

Finding the Fourth Proportional to 66,958.08, 100,437.84 and 20,211.36

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Solution

The fourth proportional to 66,958.08, 100,437.84 and 20,211.36 is: 30,317.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,958.08 : 100,437.84 = 20,211.36 : x
  2. Step 2: Convert to fraction form
    66,958.08/100,437.84 = 20,211.36/x
  3. Step 3: Cross multiply
    66,958.08x = 100,437.84 × 20,211.36
  4. Step 4: Simplify right side
    66,958.08x = 2,029,985,341.86
  5. Step 5: Solve for x
    x = 2,029,985,341.86/66,958.08
  6. Step 6: Final answer
    x = 30,317.26

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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.