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Finding the Fourth Proportional to 84,006.40, 125,912.40 and 34,061.80

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Solution

The fourth proportional to 84,006.40, 125,912.40 and 34,061.80 is: 51,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,006.40 : 125,912.40 = 34,061.80 : x
  2. Step 2: Convert to fraction form
    84,006.40/125,912.40 = 34,061.80/x
  3. Step 3: Cross multiply
    84,006.40x = 125,912.40 × 34,061.80
  4. Step 4: Simplify right side
    84,006.40x = 4,288,802,986.32
  5. Step 5: Solve for x
    x = 4,288,802,986.32/84,006.40
  6. Step 6: Final answer
    x = 51,053.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.