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Finding the Fourth Proportional to 72,068.63, 108,122.77 and 34,660

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Solution

The fourth proportional to 72,068.63, 108,122.77 and 34,660 is: 51,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068.63 : 108,122.77 = 34,660 : x
  2. Step 2: Convert to fraction form
    72,068.63/108,122.77 = 34,660/x
  3. Step 3: Cross multiply
    72,068.63x = 108,122.77 × 34,660
  4. Step 4: Simplify right side
    72,068.63x = 3,747,535,208.20
  5. Step 5: Solve for x
    x = 3,747,535,208.20/72,068.63
  6. Step 6: Final answer
    x = 51,999.53

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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.