Home / 71,212.43-98,273.79-39,381.86

Finding the Fourth Proportional to 71,212.43, 98,273.79 and 39,381.86

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Solution

The fourth proportional to 71,212.43, 98,273.79 and 39,381.86 is: 54,347.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,212.43 : 98,273.79 = 39,381.86 : x
  2. Step 2: Convert to fraction form
    71,212.43/98,273.79 = 39,381.86/x
  3. Step 3: Cross multiply
    71,212.43x = 98,273.79 × 39,381.86
  4. Step 4: Simplify right side
    71,212.43x = 3,870,204,885.13
  5. Step 5: Solve for x
    x = 3,870,204,885.13/71,212.43
  6. Step 6: Final answer
    x = 54,347.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.