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Finding the Fourth Proportional to 53,994.60, 81,002.70 and 18,958.86

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Solution

The fourth proportional to 53,994.60, 81,002.70 and 18,958.86 is: 28,442.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,994.60 : 81,002.70 = 18,958.86 : x
  2. Step 2: Convert to fraction form
    53,994.60/81,002.70 = 18,958.86/x
  3. Step 3: Cross multiply
    53,994.60x = 81,002.70 × 18,958.86
  4. Step 4: Simplify right side
    53,994.60x = 1,535,718,848.92
  5. Step 5: Solve for x
    x = 1,535,718,848.92/53,994.60
  6. Step 6: Final answer
    x = 28,442.08

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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.