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Finding the Fourth Proportional to 70,029.91, 105,051.39 and 27,899.79

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Solution

The fourth proportional to 70,029.91, 105,051.39 and 27,899.79 is: 41,852.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,029.91 : 105,051.39 = 27,899.79 : x
  2. Step 2: Convert to fraction form
    70,029.91/105,051.39 = 27,899.79/x
  3. Step 3: Cross multiply
    70,029.91x = 105,051.39 × 27,899.79
  4. Step 4: Simplify right side
    70,029.91x = 2,930,911,720.21
  5. Step 5: Solve for x
    x = 2,930,911,720.21/70,029.91
  6. Step 6: Final answer
    x = 41,852.28

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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.