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Finding the Fourth Proportional to 84,940.91, 127,404.03 and 28,779.83

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Solution

The fourth proportional to 84,940.91, 127,404.03 and 28,779.83 is: 43,167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,940.91 : 127,404.03 = 28,779.83 : x
  2. Step 2: Convert to fraction form
    84,940.91/127,404.03 = 28,779.83/x
  3. Step 3: Cross multiply
    84,940.91x = 127,404.03 × 28,779.83
  4. Step 4: Simplify right side
    84,940.91x = 3,666,666,324.71
  5. Step 5: Solve for x
    x = 3,666,666,324.71/84,940.91
  6. Step 6: Final answer
    x = 43,167.26

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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.