Home / 77,840.35-116,760.60-21,680.57

Finding the Fourth Proportional to 77,840.35, 116,760.60 and 21,680.57

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Solution

The fourth proportional to 77,840.35, 116,760.60 and 21,680.57 is: 32,520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,840.35 : 116,760.60 = 21,680.57 : x
  2. Step 2: Convert to fraction form
    77,840.35/116,760.60 = 21,680.57/x
  3. Step 3: Cross multiply
    77,840.35x = 116,760.60 × 21,680.57
  4. Step 4: Simplify right side
    77,840.35x = 2,531,436,653.44
  5. Step 5: Solve for x
    x = 2,531,436,653.44/77,840.35
  6. Step 6: Final answer
    x = 32,520.88

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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.