Home / 81,106.29-111,918.97-47,113.84

Finding the Fourth Proportional to 81,106.29, 111,918.97 and 47,113.84

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Solution

The fourth proportional to 81,106.29, 111,918.97 and 47,113.84 is: 65,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,106.29 : 111,918.97 = 47,113.84 : x
  2. Step 2: Convert to fraction form
    81,106.29/111,918.97 = 47,113.84/x
  3. Step 3: Cross multiply
    81,106.29x = 111,918.97 × 47,113.84
  4. Step 4: Simplify right side
    81,106.29x = 5,272,932,445.54
  5. Step 5: Solve for x
    x = 5,272,932,445.54/81,106.29
  6. Step 6: Final answer
    x = 65,012.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.