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Finding the Fourth Proportional to 72,539.96, 108,797.40 and 19,232.28

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Solution

The fourth proportional to 72,539.96, 108,797.40 and 19,232.28 is: 28,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.96 : 108,797.40 = 19,232.28 : x
  2. Step 2: Convert to fraction form
    72,539.96/108,797.40 = 19,232.28/x
  3. Step 3: Cross multiply
    72,539.96x = 108,797.40 × 19,232.28
  4. Step 4: Simplify right side
    72,539.96x = 2,092,422,060.07
  5. Step 5: Solve for x
    x = 2,092,422,060.07/72,539.96
  6. Step 6: Final answer
    x = 28,845.10

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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.