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Finding the Fourth Proportional to 101,668.80, 152,485.92 and 27,779.52

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Solution

The fourth proportional to 101,668.80, 152,485.92 and 27,779.52 is: 41,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,668.80 : 152,485.92 = 27,779.52 : x
  2. Step 2: Convert to fraction form
    101,668.80/152,485.92 = 27,779.52/x
  3. Step 3: Cross multiply
    101,668.80x = 152,485.92 × 27,779.52
  4. Step 4: Simplify right side
    101,668.80x = 4,235,985,664.36
  5. Step 5: Solve for x
    x = 4,235,985,664.36/101,668.80
  6. Step 6: Final answer
    x = 41,664.56

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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.