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Finding the Fourth Proportional to 84,166.74, 126,205.74 and 28,000.92

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Solution

The fourth proportional to 84,166.74, 126,205.74 and 28,000.92 is: 41,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,166.74 : 126,205.74 = 28,000.92 : x
  2. Step 2: Convert to fraction form
    84,166.74/126,205.74 = 28,000.92/x
  3. Step 3: Cross multiply
    84,166.74x = 126,205.74 × 28,000.92
  4. Step 4: Simplify right side
    84,166.74x = 3,533,876,829.28
  5. Step 5: Solve for x
    x = 3,533,876,829.28/84,166.74
  6. Step 6: Final answer
    x = 41,986.62

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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.