Home / 81,313.22-121,981.44-25,158.12

Finding the Fourth Proportional to 81,313.22, 121,981.44 and 25,158.12

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Solution

The fourth proportional to 81,313.22, 121,981.44 and 25,158.12 is: 37,740.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,313.22 : 121,981.44 = 25,158.12 : x
  2. Step 2: Convert to fraction form
    81,313.22/121,981.44 = 25,158.12/x
  3. Step 3: Cross multiply
    81,313.22x = 121,981.44 × 25,158.12
  4. Step 4: Simplify right side
    81,313.22x = 3,068,823,705.29
  5. Step 5: Solve for x
    x = 3,068,823,705.29/81,313.22
  6. Step 6: Final answer
    x = 37,740.77

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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.