Home / 81,820.06-122,743.16-28,527.37

Finding the Fourth Proportional to 81,820.06, 122,743.16 and 28,527.37

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Solution

The fourth proportional to 81,820.06, 122,743.16 and 28,527.37 is: 42,795.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.06 : 122,743.16 = 28,527.37 : x
  2. Step 2: Convert to fraction form
    81,820.06/122,743.16 = 28,527.37/x
  3. Step 3: Cross multiply
    81,820.06x = 122,743.16 × 28,527.37
  4. Step 4: Simplify right side
    81,820.06x = 3,501,539,888.20
  5. Step 5: Solve for x
    x = 3,501,539,888.20/81,820.06
  6. Step 6: Final answer
    x = 42,795.62

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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.