Home / 83,784.24-115,739.74-76,217.22

Finding the Fourth Proportional to 83,784.24, 115,739.74 and 76,217.22

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Solution

The fourth proportional to 83,784.24, 115,739.74 and 76,217.22 is: 105,286.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,784.24 : 115,739.74 = 76,217.22 : x
  2. Step 2: Convert to fraction form
    83,784.24/115,739.74 = 76,217.22/x
  3. Step 3: Cross multiply
    83,784.24x = 115,739.74 × 76,217.22
  4. Step 4: Simplify right side
    83,784.24x = 8,821,360,892.87
  5. Step 5: Solve for x
    x = 8,821,360,892.87/83,784.24
  6. Step 6: Final answer
    x = 105,286.64

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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.