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Finding the Fourth Proportional to 81,350.82, 122,004.36 and 28,746.18

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Solution

The fourth proportional to 81,350.82, 122,004.36 and 28,746.18 is: 43,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.82 : 122,004.36 = 28,746.18 : x
  2. Step 2: Convert to fraction form
    81,350.82/122,004.36 = 28,746.18/x
  3. Step 3: Cross multiply
    81,350.82x = 122,004.36 × 28,746.18
  4. Step 4: Simplify right side
    81,350.82x = 3,507,159,293.34
  5. Step 5: Solve for x
    x = 3,507,159,293.34/81,350.82
  6. Step 6: Final answer
    x = 43,111.54

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1.5x scale

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.