Home / 8,072,420.31-11,188,026.99-7,921,254.87

Finding the Fourth Proportional to 8,072,420.31, 11,188,026.99 and 7,921,254.87

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Solution

The fourth proportional to 8,072,420.31, 11,188,026.99 and 7,921,254.87 is: 10,978,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072,420.31 : 11,188,026.99 = 7,921,254.87 : x
  2. Step 2: Convert to fraction form
    8,072,420.31/11,188,026.99 = 7,921,254.87/x
  3. Step 3: Cross multiply
    8,072,420.31x = 11,188,026.99 × 7,921,254.87
  4. Step 4: Simplify right side
    8,072,420.31x = 88,623,213,280,228.94
  5. Step 5: Solve for x
    x = 88,623,213,280,228.94/8,072,420.31
  6. Step 6: Final answer
    x = 10,978,518.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.