Home / 81,309,969.20-122,006,288.10-54,035,236.10

Finding the Fourth Proportional to 81,309,969.20, 122,006,288.10 and 54,035,236.10

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Solution

The fourth proportional to 81,309,969.20, 122,006,288.10 and 54,035,236.10 is: 81,080,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,309,969.20 : 122,006,288.10 = 54,035,236.10 : x
  2. Step 2: Convert to fraction form
    81,309,969.20/122,006,288.10 = 54,035,236.10/x
  3. Step 3: Cross multiply
    81,309,969.20x = 122,006,288.10 × 54,035,236.10
  4. Step 4: Simplify right side
    81,309,969.20x = 6,592,638,583,168,120
  5. Step 5: Solve for x
    x = 6,592,638,583,168,120/81,309,969.20
  6. Step 6: Final answer
    x = 81,080,323.21

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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.