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Finding the Fourth Proportional to 69,971.30, 96,559.64 and 38,139.51

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Solution

The fourth proportional to 69,971.30, 96,559.64 and 38,139.51 is: 52,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,971.30 : 96,559.64 = 38,139.51 : x
  2. Step 2: Convert to fraction form
    69,971.30/96,559.64 = 38,139.51/x
  3. Step 3: Cross multiply
    69,971.30x = 96,559.64 × 38,139.51
  4. Step 4: Simplify right side
    69,971.30x = 3,682,737,355.38
  5. Step 5: Solve for x
    x = 3,682,737,355.38/69,971.30
  6. Step 6: Final answer
    x = 52,632.12

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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.