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Finding the Fourth Proportional to 84,509.52, 126,779.36 and 28,367.91

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Solution

The fourth proportional to 84,509.52, 126,779.36 and 28,367.91 is: 42,556.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,509.52 : 126,779.36 = 28,367.91 : x
  2. Step 2: Convert to fraction form
    84,509.52/126,779.36 = 28,367.91/x
  3. Step 3: Cross multiply
    84,509.52x = 126,779.36 × 28,367.91
  4. Step 4: Simplify right side
    84,509.52x = 3,596,465,474.34
  5. Step 5: Solve for x
    x = 3,596,465,474.34/84,509.52
  6. Step 6: Final answer
    x = 42,556.93

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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.