Home / 80,878,889.40-121,318,334.10-53,669,110.20

Finding the Fourth Proportional to 80,878,889.40, 121,318,334.10 and 53,669,110.20

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Solution

The fourth proportional to 80,878,889.40, 121,318,334.10 and 53,669,110.20 is: 80,503,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,878,889.40 : 121,318,334.10 = 53,669,110.20 : x
  2. Step 2: Convert to fraction form
    80,878,889.40/121,318,334.10 = 53,669,110.20/x
  3. Step 3: Cross multiply
    80,878,889.40x = 121,318,334.10 × 53,669,110.20
  4. Step 4: Simplify right side
    80,878,889.40x = 6,511,047,042,093,318
  5. Step 5: Solve for x
    x = 6,511,047,042,093,318/80,878,889.40
  6. Step 6: Final answer
    x = 80,503,665.30

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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.