Home / 71,722.38-98,975.48-39,890.60

Finding the Fourth Proportional to 71,722.38, 98,975.48 and 39,890.60

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Solution

The fourth proportional to 71,722.38, 98,975.48 and 39,890.60 is: 55,048.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,722.38 : 98,975.48 = 39,890.60 : x
  2. Step 2: Convert to fraction form
    71,722.38/98,975.48 = 39,890.60/x
  3. Step 3: Cross multiply
    71,722.38x = 98,975.48 × 39,890.60
  4. Step 4: Simplify right side
    71,722.38x = 3,948,191,282.49
  5. Step 5: Solve for x
    x = 3,948,191,282.49/71,722.38
  6. Step 6: Final answer
    x = 55,048.25

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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.