Home / 78,738,509.70-118,107,764.55-74,274,405.30

Finding the Fourth Proportional to 78,738,509.70, 118,107,764.55 and 74,274,405.30

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Solution

The fourth proportional to 78,738,509.70, 118,107,764.55 and 74,274,405.30 is: 111,411,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738,509.70 : 118,107,764.55 = 74,274,405.30 : x
  2. Step 2: Convert to fraction form
    78,738,509.70/118,107,764.55 = 74,274,405.30/x
  3. Step 3: Cross multiply
    78,738,509.70x = 118,107,764.55 × 74,274,405.30
  4. Step 4: Simplify right side
    78,738,509.70x = 8,772,383,973,263,672
  5. Step 5: Solve for x
    x = 8,772,383,973,263,672/78,738,509.70
  6. Step 6: Final answer
    x = 111,411,607.95

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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.