Home / 81,658.02-122,504.54-28,351.69

Finding the Fourth Proportional to 81,658.02, 122,504.54 and 28,351.69

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Solution

The fourth proportional to 81,658.02, 122,504.54 and 28,351.69 is: 42,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,658.02 : 122,504.54 = 28,351.69 : x
  2. Step 2: Convert to fraction form
    81,658.02/122,504.54 = 28,351.69/x
  3. Step 3: Cross multiply
    81,658.02x = 122,504.54 × 28,351.69
  4. Step 4: Simplify right side
    81,658.02x = 3,473,210,293.65
  5. Step 5: Solve for x
    x = 3,473,210,293.65/81,658.02
  6. Step 6: Final answer
    x = 42,533.61

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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.