Home / 81,623.40-122,507.10-48,301.80

Finding the Fourth Proportional to 81,623.40, 122,507.10 and 48,301.80

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Solution

The fourth proportional to 81,623.40, 122,507.10 and 48,301.80 is: 72,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.40 : 122,507.10 = 48,301.80 : x
  2. Step 2: Convert to fraction form
    81,623.40/122,507.10 = 48,301.80/x
  3. Step 3: Cross multiply
    81,623.40x = 122,507.10 × 48,301.80
  4. Step 4: Simplify right side
    81,623.40x = 5,917,313,442.78
  5. Step 5: Solve for x
    x = 5,917,313,442.78/81,623.40
  6. Step 6: Final answer
    x = 72,495.31

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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.