Home / 85,824.72-128,766.24-26,668.80

Finding the Fourth Proportional to 85,824.72, 128,766.24 and 26,668.80

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Solution

The fourth proportional to 85,824.72, 128,766.24 and 26,668.80 is: 40,012.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824.72 : 128,766.24 = 26,668.80 : x
  2. Step 2: Convert to fraction form
    85,824.72/128,766.24 = 26,668.80/x
  3. Step 3: Cross multiply
    85,824.72x = 128,766.24 × 26,668.80
  4. Step 4: Simplify right side
    85,824.72x = 3,434,041,101.31
  5. Step 5: Solve for x
    x = 3,434,041,101.31/85,824.72
  6. Step 6: Final answer
    x = 40,012.26

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1.5x scale

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.