Home / 65,722.19-90,698.43-40,228.04

Finding the Fourth Proportional to 65,722.19, 90,698.43 and 40,228.04

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Solution

The fourth proportional to 65,722.19, 90,698.43 and 40,228.04 is: 55,515.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,722.19 : 90,698.43 = 40,228.04 : x
  2. Step 2: Convert to fraction form
    65,722.19/90,698.43 = 40,228.04/x
  3. Step 3: Cross multiply
    65,722.19x = 90,698.43 × 40,228.04
  4. Step 4: Simplify right side
    65,722.19x = 3,648,620,447.58
  5. Step 5: Solve for x
    x = 3,648,620,447.58/65,722.19
  6. Step 6: Final answer
    x = 55,515.81

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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.