Home / 80,852,971.20-121,284,705.60-42,589,219.20

Finding the Fourth Proportional to 80,852,971.20, 121,284,705.60 and 42,589,219.20

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Solution

The fourth proportional to 80,852,971.20, 121,284,705.60 and 42,589,219.20 is: 63,886,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,852,971.20 : 121,284,705.60 = 42,589,219.20 : x
  2. Step 2: Convert to fraction form
    80,852,971.20/121,284,705.60 = 42,589,219.20/x
  3. Step 3: Cross multiply
    80,852,971.20x = 121,284,705.60 × 42,589,219.20
  4. Step 4: Simplify right side
    80,852,971.20x = 5,165,420,912,405,868
  5. Step 5: Solve for x
    x = 5,165,420,912,405,868/80,852,971.20
  6. Step 6: Final answer
    x = 63,886,593.60

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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.