Home / 77,274,800.40-115,912,200.60-69,212,643.60

Finding the Fourth Proportional to 77,274,800.40, 115,912,200.60 and 69,212,643.60

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Solution

The fourth proportional to 77,274,800.40, 115,912,200.60 and 69,212,643.60 is: 103,818,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,274,800.40 : 115,912,200.60 = 69,212,643.60 : x
  2. Step 2: Convert to fraction form
    77,274,800.40/115,912,200.60 = 69,212,643.60/x
  3. Step 3: Cross multiply
    77,274,800.40x = 115,912,200.60 × 69,212,643.60
  4. Step 4: Simplify right side
    77,274,800.40x = 8,022,589,829,019,505
  5. Step 5: Solve for x
    x = 8,022,589,829,019,505/77,274,800.40
  6. Step 6: Final answer
    x = 103,818,965.40

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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.