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Finding the Fourth Proportional to 69,971.06, 96,560.49 and 38,139.87

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Solution

The fourth proportional to 69,971.06, 96,560.49 and 38,139.87 is: 52,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,971.06 : 96,560.49 = 38,139.87 : x
  2. Step 2: Convert to fraction form
    69,971.06/96,560.49 = 38,139.87/x
  3. Step 3: Cross multiply
    69,971.06x = 96,560.49 × 38,139.87
  4. Step 4: Simplify right side
    69,971.06x = 3,682,804,535.74
  5. Step 5: Solve for x
    x = 3,682,804,535.74/69,971.06
  6. Step 6: Final answer
    x = 52,633.26

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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.