Home / 81,048.20-121,514.70-36,696.20

Finding the Fourth Proportional to 81,048.20, 121,514.70 and 36,696.20

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Solution

The fourth proportional to 81,048.20, 121,514.70 and 36,696.20 is: 55,018.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,048.20 : 121,514.70 = 36,696.20 : x
  2. Step 2: Convert to fraction form
    81,048.20/121,514.70 = 36,696.20/x
  3. Step 3: Cross multiply
    81,048.20x = 121,514.70 × 36,696.20
  4. Step 4: Simplify right side
    81,048.20x = 4,459,127,734.14
  5. Step 5: Solve for x
    x = 4,459,127,734.14/81,048.20
  6. Step 6: Final answer
    x = 55,018.22

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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.