Home / 81,004.09-121,500.74-38,914.33

Finding the Fourth Proportional to 81,004.09, 121,500.74 and 38,914.33

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Solution

The fourth proportional to 81,004.09, 121,500.74 and 38,914.33 is: 58,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,004.09 : 121,500.74 = 38,914.33 : x
  2. Step 2: Convert to fraction form
    81,004.09/121,500.74 = 38,914.33/x
  3. Step 3: Cross multiply
    81,004.09x = 121,500.74 × 38,914.33
  4. Step 4: Simplify right side
    81,004.09x = 4,728,119,697.03
  5. Step 5: Solve for x
    x = 4,728,119,697.03/81,004.09
  6. Step 6: Final answer
    x = 58,368.90

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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.