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Finding the Fourth Proportional to 72,458.01, 108,852.66 and 51,449.85

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Solution

The fourth proportional to 72,458.01, 108,852.66 and 51,449.85 is: 77,292.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,458.01 : 108,852.66 = 51,449.85 : x
  2. Step 2: Convert to fraction form
    72,458.01/108,852.66 = 51,449.85/x
  3. Step 3: Cross multiply
    72,458.01x = 108,852.66 × 51,449.85
  4. Step 4: Simplify right side
    72,458.01x = 5,600,453,029.10
  5. Step 5: Solve for x
    x = 5,600,453,029.10/72,458.01
  6. Step 6: Final answer
    x = 77,292.39

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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.