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Finding the Fourth Proportional to 71,012.92, 97,998.18 and 39,181.84

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Solution

The fourth proportional to 71,012.92, 97,998.18 and 39,181.84 is: 54,071.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,012.92 : 97,998.18 = 39,181.84 : x
  2. Step 2: Convert to fraction form
    71,012.92/97,998.18 = 39,181.84/x
  3. Step 3: Cross multiply
    71,012.92x = 97,998.18 × 39,181.84
  4. Step 4: Simplify right side
    71,012.92x = 3,839,749,009.05
  5. Step 5: Solve for x
    x = 3,839,749,009.05/71,012.92
  6. Step 6: Final answer
    x = 54,071.13

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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.