Home / 81,001.01-121,486.33-65,297.75

Finding the Fourth Proportional to 81,001.01, 121,486.33 and 65,297.75

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Solution

The fourth proportional to 81,001.01, 121,486.33 and 65,297.75 is: 97,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,001.01 : 121,486.33 = 65,297.75 : x
  2. Step 2: Convert to fraction form
    81,001.01/121,486.33 = 65,297.75/x
  3. Step 3: Cross multiply
    81,001.01x = 121,486.33 × 65,297.75
  4. Step 4: Simplify right side
    81,001.01x = 7,932,783,478.95
  5. Step 5: Solve for x
    x = 7,932,783,478.95/81,001.01
  6. Step 6: Final answer
    x = 97,934.37

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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.