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Finding the Fourth Proportional to 70,956.06, 97,918.11 and 39,127.86

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Solution

The fourth proportional to 70,956.06, 97,918.11 and 39,127.86 is: 53,995.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.06 : 97,918.11 = 39,127.86 : x
  2. Step 2: Convert to fraction form
    70,956.06/97,918.11 = 39,127.86/x
  3. Step 3: Cross multiply
    70,956.06x = 97,918.11 × 39,127.86
  4. Step 4: Simplify right side
    70,956.06x = 3,831,326,099.54
  5. Step 5: Solve for x
    x = 3,831,326,099.54/70,956.06
  6. Step 6: Final answer
    x = 53,995.76

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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.