Home / 81,834.68-122,751.20-28,526.55

Finding the Fourth Proportional to 81,834.68, 122,751.20 and 28,526.55

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Solution

The fourth proportional to 81,834.68, 122,751.20 and 28,526.55 is: 42,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,834.68 : 122,751.20 = 28,526.55 : x
  2. Step 2: Convert to fraction form
    81,834.68/122,751.20 = 28,526.55/x
  3. Step 3: Cross multiply
    81,834.68x = 122,751.20 × 28,526.55
  4. Step 4: Simplify right side
    81,834.68x = 3,501,668,244.36
  5. Step 5: Solve for x
    x = 3,501,668,244.36/81,834.68
  6. Step 6: Final answer
    x = 42,789.54

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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.