Home / 78,733,999.70-118,100,999.55-67,774,505.30

Finding the Fourth Proportional to 78,733,999.70, 118,100,999.55 and 67,774,505.30

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Solution

The fourth proportional to 78,733,999.70, 118,100,999.55 and 67,774,505.30 is: 101,661,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733,999.70 : 118,100,999.55 = 67,774,505.30 : x
  2. Step 2: Convert to fraction form
    78,733,999.70/118,100,999.55 = 67,774,505.30/x
  3. Step 3: Cross multiply
    78,733,999.70x = 118,100,999.55 × 67,774,505.30
  4. Step 4: Simplify right side
    78,733,999.70x = 8,004,236,819,936,772
  5. Step 5: Solve for x
    x = 8,004,236,819,936,772/78,733,999.70
  6. Step 6: Final answer
    x = 101,661,757.95

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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.