Home / 76,100.73-105,011.85-51,521.54

Finding the Fourth Proportional to 76,100.73, 105,011.85 and 51,521.54

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Solution

The fourth proportional to 76,100.73, 105,011.85 and 51,521.54 is: 71,094.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,100.73 : 105,011.85 = 51,521.54 : x
  2. Step 2: Convert to fraction form
    76,100.73/105,011.85 = 51,521.54/x
  3. Step 3: Cross multiply
    76,100.73x = 105,011.85 × 51,521.54
  4. Step 4: Simplify right side
    76,100.73x = 5,410,372,530.85
  5. Step 5: Solve for x
    x = 5,410,372,530.85/76,100.73
  6. Step 6: Final answer
    x = 71,094.89

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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.