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Finding the Fourth Proportional to 70,959.38, 97,924.61 and 39,129.42

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Solution

The fourth proportional to 70,959.38, 97,924.61 and 39,129.42 is: 53,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,959.38 : 97,924.61 = 39,129.42 : x
  2. Step 2: Convert to fraction form
    70,959.38/97,924.61 = 39,129.42/x
  3. Step 3: Cross multiply
    70,959.38x = 97,924.61 × 39,129.42
  4. Step 4: Simplify right side
    70,959.38x = 3,831,733,193.03
  5. Step 5: Solve for x
    x = 3,831,733,193.03/70,959.38
  6. Step 6: Final answer
    x = 53,998.97

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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.