Home / 85,619.52-128,416.32-23,294.88

Finding the Fourth Proportional to 85,619.52, 128,416.32 and 23,294.88

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Solution

The fourth proportional to 85,619.52, 128,416.32 and 23,294.88 is: 34,938.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.52 : 128,416.32 = 23,294.88 : x
  2. Step 2: Convert to fraction form
    85,619.52/128,416.32 = 23,294.88/x
  3. Step 3: Cross multiply
    85,619.52x = 128,416.32 × 23,294.88
  4. Step 4: Simplify right side
    85,619.52x = 2,991,442,764.44
  5. Step 5: Solve for x
    x = 2,991,442,764.44/85,619.52
  6. Step 6: Final answer
    x = 34,938.79

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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.