Home / 84,316.84-126,379.26-28,143.76

Finding the Fourth Proportional to 84,316.84, 126,379.26 and 28,143.76

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Solution

The fourth proportional to 84,316.84, 126,379.26 and 28,143.76 is: 42,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,316.84 : 126,379.26 = 28,143.76 : x
  2. Step 2: Convert to fraction form
    84,316.84/126,379.26 = 28,143.76/x
  3. Step 3: Cross multiply
    84,316.84x = 126,379.26 × 28,143.76
  4. Step 4: Simplify right side
    84,316.84x = 3,556,787,562.42
  5. Step 5: Solve for x
    x = 3,556,787,562.42/84,316.84
  6. Step 6: Final answer
    x = 42,183.60

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1.5x scale

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.