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Finding the Fourth Proportional to 54,365.80, 81,529.14 and 18,817.46

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Solution

The fourth proportional to 54,365.80, 81,529.14 and 18,817.46 is: 28,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,365.80 : 81,529.14 = 18,817.46 : x
  2. Step 2: Convert to fraction form
    54,365.80/81,529.14 = 18,817.46/x
  3. Step 3: Cross multiply
    54,365.80x = 81,529.14 × 18,817.46
  4. Step 4: Simplify right side
    54,365.80x = 1,534,171,440.52
  5. Step 5: Solve for x
    x = 1,534,171,440.52/54,365.80
  6. Step 6: Final answer
    x = 28,219.42

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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.