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Finding the Fourth Proportional to 71,166.70, 98,205.06 and 39,336.76

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Solution

The fourth proportional to 71,166.70, 98,205.06 and 39,336.76 is: 54,281.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,166.70 : 98,205.06 = 39,336.76 : x
  2. Step 2: Convert to fraction form
    71,166.70/98,205.06 = 39,336.76/x
  3. Step 3: Cross multiply
    71,166.70x = 98,205.06 × 39,336.76
  4. Step 4: Simplify right side
    71,166.70x = 3,863,068,876.01
  5. Step 5: Solve for x
    x = 3,863,068,876.01/71,166.70
  6. Step 6: Final answer
    x = 54,281.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.