Home / 76,971.35-106,293.82-72,778.01

Finding the Fourth Proportional to 76,971.35, 106,293.82 and 72,778.01

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Solution

The fourth proportional to 76,971.35, 106,293.82 and 72,778.01 is: 100,503.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,971.35 : 106,293.82 = 72,778.01 : x
  2. Step 2: Convert to fraction form
    76,971.35/106,293.82 = 72,778.01/x
  3. Step 3: Cross multiply
    76,971.35x = 106,293.82 × 72,778.01
  4. Step 4: Simplify right side
    76,971.35x = 7,735,852,163.43
  5. Step 5: Solve for x
    x = 7,735,852,163.43/76,971.35
  6. Step 6: Final answer
    x = 100,503.01

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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.