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Finding the Fourth Proportional to 54,630.45, 81,925.81 and 19,081.81

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Solution

The fourth proportional to 54,630.45, 81,925.81 and 19,081.81 is: 28,615.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,630.45 : 81,925.81 = 19,081.81 : x
  2. Step 2: Convert to fraction form
    54,630.45/81,925.81 = 19,081.81/x
  3. Step 3: Cross multiply
    54,630.45x = 81,925.81 × 19,081.81
  4. Step 4: Simplify right side
    54,630.45x = 1,563,292,740.52
  5. Step 5: Solve for x
    x = 1,563,292,740.52/54,630.45
  6. Step 6: Final answer
    x = 28,615.78

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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.