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Finding the Fourth Proportional to 55,051.59, 82,581.51 and 15,611.88

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Solution

The fourth proportional to 55,051.59, 82,581.51 and 15,611.88 is: 23,418.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,051.59 : 82,581.51 = 15,611.88 : x
  2. Step 2: Convert to fraction form
    55,051.59/82,581.51 = 15,611.88/x
  3. Step 3: Cross multiply
    55,051.59x = 82,581.51 × 15,611.88
  4. Step 4: Simplify right side
    55,051.59x = 1,289,252,904.75
  5. Step 5: Solve for x
    x = 1,289,252,904.75/55,051.59
  6. Step 6: Final answer
    x = 23,418.99

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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.