Home / 76,761.36-105,807.99-51,217.20

Finding the Fourth Proportional to 76,761.36, 105,807.99 and 51,217.20

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Solution

The fourth proportional to 76,761.36, 105,807.99 and 51,217.20 is: 70,597.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,761.36 : 105,807.99 = 51,217.20 : x
  2. Step 2: Convert to fraction form
    76,761.36/105,807.99 = 51,217.20/x
  3. Step 3: Cross multiply
    76,761.36x = 105,807.99 × 51,217.20
  4. Step 4: Simplify right side
    76,761.36x = 5,419,188,729.34
  5. Step 5: Solve for x
    x = 5,419,188,729.34/76,761.36
  6. Step 6: Final answer
    x = 70,597.87

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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.