Home / 81,795.42-122,749.63-53,728.92

Finding the Fourth Proportional to 81,795.42, 122,749.63 and 53,728.92

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Solution

The fourth proportional to 81,795.42, 122,749.63 and 53,728.92 is: 80,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,795.42 : 122,749.63 = 53,728.92 : x
  2. Step 2: Convert to fraction form
    81,795.42/122,749.63 = 53,728.92/x
  3. Step 3: Cross multiply
    81,795.42x = 122,749.63 × 53,728.92
  4. Step 4: Simplify right side
    81,795.42x = 6,595,204,915.98
  5. Step 5: Solve for x
    x = 6,595,204,915.98/81,795.42
  6. Step 6: Final answer
    x = 80,630.49

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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.