Home / 84,316.10-126,474.15-21,986.60

Finding the Fourth Proportional to 84,316.10, 126,474.15 and 21,986.60

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Solution

The fourth proportional to 84,316.10, 126,474.15 and 21,986.60 is: 32,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,316.10 : 126,474.15 = 21,986.60 : x
  2. Step 2: Convert to fraction form
    84,316.10/126,474.15 = 21,986.60/x
  3. Step 3: Cross multiply
    84,316.10x = 126,474.15 × 21,986.60
  4. Step 4: Simplify right side
    84,316.10x = 2,780,736,546.39
  5. Step 5: Solve for x
    x = 2,780,736,546.39/84,316.10
  6. Step 6: Final answer
    x = 32,979.90

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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.