Home / 76,905.37-106,116.69-51,370.80

Finding the Fourth Proportional to 76,905.37, 106,116.69 and 51,370.80

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Solution

The fourth proportional to 76,905.37, 106,116.69 and 51,370.80 is: 70,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,905.37 : 106,116.69 = 51,370.80 : x
  2. Step 2: Convert to fraction form
    76,905.37/106,116.69 = 51,370.80/x
  3. Step 3: Cross multiply
    76,905.37x = 106,116.69 × 51,370.80
  4. Step 4: Simplify right side
    76,905.37x = 5,451,299,258.65
  5. Step 5: Solve for x
    x = 5,451,299,258.65/76,905.37
  6. Step 6: Final answer
    x = 70,883.21

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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.