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Finding the Fourth Proportional to 71,155, 98,195.86 and 39,325.96

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Solution

The fourth proportional to 71,155, 98,195.86 and 39,325.96 is: 54,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,155 : 98,195.86 = 39,325.96 : x
  2. Step 2: Convert to fraction form
    71,155/98,195.86 = 39,325.96/x
  3. Step 3: Cross multiply
    71,155x = 98,195.86 × 39,325.96
  4. Step 4: Simplify right side
    71,155x = 3,861,646,462.53
  5. Step 5: Solve for x
    x = 3,861,646,462.53/71,155
  6. Step 6: Final answer
    x = 54,270.91

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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.