Home / 8,421,137.89-11,621,239.79-4,649,321.51

Finding the Fourth Proportional to 8,421,137.89, 11,621,239.79 and 4,649,321.51

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Solution

The fourth proportional to 8,421,137.89, 11,621,239.79 and 4,649,321.51 is: 6,416,102.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421,137.89 : 11,621,239.79 = 4,649,321.51 : x
  2. Step 2: Convert to fraction form
    8,421,137.89/11,621,239.79 = 4,649,321.51/x
  3. Step 3: Cross multiply
    8,421,137.89x = 11,621,239.79 × 4,649,321.51
  4. Step 4: Simplify right side
    8,421,137.89x = 54,030,880,128,514.88
  5. Step 5: Solve for x
    x = 54,030,880,128,514.88/8,421,137.89
  6. Step 6: Final answer
    x = 6,416,102.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.