Home / 81,167.34-121,762.62-25,012.20

Finding the Fourth Proportional to 81,167.34, 121,762.62 and 25,012.20

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Solution

The fourth proportional to 81,167.34, 121,762.62 and 25,012.20 is: 37,521.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,167.34 : 121,762.62 = 25,012.20 : x
  2. Step 2: Convert to fraction form
    81,167.34/121,762.62 = 25,012.20/x
  3. Step 3: Cross multiply
    81,167.34x = 121,762.62 × 25,012.20
  4. Step 4: Simplify right side
    81,167.34x = 3,045,551,003.96
  5. Step 5: Solve for x
    x = 3,045,551,003.96/81,167.34
  6. Step 6: Final answer
    x = 37,521.88

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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.