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Finding the Fourth Proportional to 67,893.53, 101,838.75 and 39,990.59

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Solution

The fourth proportional to 67,893.53, 101,838.75 and 39,990.59 is: 59,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,893.53 : 101,838.75 = 39,990.59 : x
  2. Step 2: Convert to fraction form
    67,893.53/101,838.75 = 39,990.59/x
  3. Step 3: Cross multiply
    67,893.53x = 101,838.75 × 39,990.59
  4. Step 4: Simplify right side
    67,893.53x = 4,072,590,988.22
  5. Step 5: Solve for x
    x = 4,072,590,988.22/67,893.53
  6. Step 6: Final answer
    x = 59,984.97

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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.