Home / 81,905.61-122,858.33-25,750.63

Finding the Fourth Proportional to 81,905.61, 122,858.33 and 25,750.63

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Solution

The fourth proportional to 81,905.61, 122,858.33 and 25,750.63 is: 38,625.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.61 : 122,858.33 = 25,750.63 : x
  2. Step 2: Convert to fraction form
    81,905.61/122,858.33 = 25,750.63/x
  3. Step 3: Cross multiply
    81,905.61x = 122,858.33 × 25,750.63
  4. Step 4: Simplify right side
    81,905.61x = 3,163,678,962.35
  5. Step 5: Solve for x
    x = 3,163,678,962.35/81,905.61
  6. Step 6: Final answer
    x = 38,625.91

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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.