Home / 81,838.07-122,778.47-25,679.96

Finding the Fourth Proportional to 81,838.07, 122,778.47 and 25,679.96

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Solution

The fourth proportional to 81,838.07, 122,778.47 and 25,679.96 is: 38,526.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,838.07 : 122,778.47 = 25,679.96 : x
  2. Step 2: Convert to fraction form
    81,838.07/122,778.47 = 25,679.96/x
  3. Step 3: Cross multiply
    81,838.07x = 122,778.47 × 25,679.96
  4. Step 4: Simplify right side
    81,838.07x = 3,152,946,198.46
  5. Step 5: Solve for x
    x = 3,152,946,198.46/81,838.07
  6. Step 6: Final answer
    x = 38,526.64

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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.