Home / 71,108.28-106,661.02-21,222.18

Finding the Fourth Proportional to 71,108.28, 106,661.02 and 21,222.18

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Solution

The fourth proportional to 71,108.28, 106,661.02 and 21,222.18 is: 31,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,108.28 : 106,661.02 = 21,222.18 : x
  2. Step 2: Convert to fraction form
    71,108.28/106,661.02 = 21,222.18/x
  3. Step 3: Cross multiply
    71,108.28x = 106,661.02 × 21,222.18
  4. Step 4: Simplify right side
    71,108.28x = 2,263,579,365.42
  5. Step 5: Solve for x
    x = 2,263,579,365.42/71,108.28
  6. Step 6: Final answer
    x = 31,832.85

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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.