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Finding the Fourth Proportional to 62,415.50, 86,133.40 and 34,121.40

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Solution

The fourth proportional to 62,415.50, 86,133.40 and 34,121.40 is: 47,087.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,415.50 : 86,133.40 = 34,121.40 : x
  2. Step 2: Convert to fraction form
    62,415.50/86,133.40 = 34,121.40/x
  3. Step 3: Cross multiply
    62,415.50x = 86,133.40 × 34,121.40
  4. Step 4: Simplify right side
    62,415.50x = 2,938,992,194.76
  5. Step 5: Solve for x
    x = 2,938,992,194.76/62,415.50
  6. Step 6: Final answer
    x = 47,087.54

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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.