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Finding the Fourth Proportional to 72,034.81, 108,028.86 and 23,990.63

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Solution

The fourth proportional to 72,034.81, 108,028.86 and 23,990.63 is: 35,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,034.81 : 108,028.86 = 23,990.63 : x
  2. Step 2: Convert to fraction form
    72,034.81/108,028.86 = 23,990.63/x
  3. Step 3: Cross multiply
    72,034.81x = 108,028.86 × 23,990.63
  4. Step 4: Simplify right side
    72,034.81x = 2,591,679,749.48
  5. Step 5: Solve for x
    x = 2,591,679,749.48/72,034.81
  6. Step 6: Final answer
    x = 35,978.16

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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.