Home / 78,279,384.22-117,362,145.59-36,758,865.12

Finding the Fourth Proportional to 78,279,384.22, 117,362,145.59 and 36,758,865.12

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Solution

The fourth proportional to 78,279,384.22, 117,362,145.59 and 36,758,865.12 is: 55,111,563.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,279,384.22 : 117,362,145.59 = 36,758,865.12 : x
  2. Step 2: Convert to fraction form
    78,279,384.22/117,362,145.59 = 36,758,865.12/x
  3. Step 3: Cross multiply
    78,279,384.22x = 117,362,145.59 × 36,758,865.12
  4. Step 4: Simplify right side
    78,279,384.22x = 4,314,099,279,450,556.50
  5. Step 5: Solve for x
    x = 4,314,099,279,450,556.50/78,279,384.22
  6. Step 6: Final answer
    x = 55,111,563.82

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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.