Home / 77,889,635.74-116,831,205.15-20,380,633.66

Finding the Fourth Proportional to 77,889,635.74, 116,831,205.15 and 20,380,633.66

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Solution

The fourth proportional to 77,889,635.74, 116,831,205.15 and 20,380,633.66 is: 30,570,100.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,889,635.74 : 116,831,205.15 = 20,380,633.66 : x
  2. Step 2: Convert to fraction form
    77,889,635.74/116,831,205.15 = 20,380,633.66/x
  3. Step 3: Cross multiply
    77,889,635.74x = 116,831,205.15 × 20,380,633.66
  4. Step 4: Simplify right side
    77,889,635.74x = 2,381,093,992,218,455.50
  5. Step 5: Solve for x
    x = 2,381,093,992,218,455.50/77,889,635.74
  6. Step 6: Final answer
    x = 30,570,100.50

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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.