Home / 69,870.12-104,809.02-20,625.96

Finding the Fourth Proportional to 69,870.12, 104,809.02 and 20,625.96

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Solution

The fourth proportional to 69,870.12, 104,809.02 and 20,625.96 is: 30,940.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,870.12 : 104,809.02 = 20,625.96 : x
  2. Step 2: Convert to fraction form
    69,870.12/104,809.02 = 20,625.96/x
  3. Step 3: Cross multiply
    69,870.12x = 104,809.02 × 20,625.96
  4. Step 4: Simplify right side
    69,870.12x = 2,161,786,654.16
  5. Step 5: Solve for x
    x = 2,161,786,654.16/69,870.12
  6. Step 6: Final answer
    x = 30,940.07

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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.