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Finding the Fourth Proportional to 71,156.35, 98,205.15 and 68,819.68

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Solution

The fourth proportional to 71,156.35, 98,205.15 and 68,819.68 is: 94,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,156.35 : 98,205.15 = 68,819.68 : x
  2. Step 2: Convert to fraction form
    71,156.35/98,205.15 = 68,819.68/x
  3. Step 3: Cross multiply
    71,156.35x = 98,205.15 × 68,819.68
  4. Step 4: Simplify right side
    71,156.35x = 6,758,446,997.35
  5. Step 5: Solve for x
    x = 6,758,446,997.35/71,156.35
  6. Step 6: Final answer
    x = 94,980.24

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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.