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Finding the Fourth Proportional to 84,343.65, 126,515.48 and 22,014.15

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Solution

The fourth proportional to 84,343.65, 126,515.48 and 22,014.15 is: 33,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,343.65 : 126,515.48 = 22,014.15 : x
  2. Step 2: Convert to fraction form
    84,343.65/126,515.48 = 22,014.15/x
  3. Step 3: Cross multiply
    84,343.65x = 126,515.48 × 22,014.15
  4. Step 4: Simplify right side
    84,343.65x = 2,785,130,643.97
  5. Step 5: Solve for x
    x = 2,785,130,643.97/84,343.65
  6. Step 6: Final answer
    x = 33,021.23

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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.