Home / 67,021.43-100,379.03-31,985.69

Finding the Fourth Proportional to 67,021.43, 100,379.03 and 31,985.69

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Solution

The fourth proportional to 67,021.43, 100,379.03 and 31,985.69 is: 47,905.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,021.43 : 100,379.03 = 31,985.69 : x
  2. Step 2: Convert to fraction form
    67,021.43/100,379.03 = 31,985.69/x
  3. Step 3: Cross multiply
    67,021.43x = 100,379.03 × 31,985.69
  4. Step 4: Simplify right side
    67,021.43x = 3,210,692,054.18
  5. Step 5: Solve for x
    x = 3,210,692,054.18/67,021.43
  6. Step 6: Final answer
    x = 47,905.46

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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.