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Finding the Fourth Proportional to 67,770, 93,515.90 and 39,092.27

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Solution

The fourth proportional to 67,770, 93,515.90 and 39,092.27 is: 53,943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,770 : 93,515.90 = 39,092.27 : x
  2. Step 2: Convert to fraction form
    67,770/93,515.90 = 39,092.27/x
  3. Step 3: Cross multiply
    67,770x = 93,515.90 × 39,092.27
  4. Step 4: Simplify right side
    67,770x = 3,655,748,149.05
  5. Step 5: Solve for x
    x = 3,655,748,149.05/67,770
  6. Step 6: Final answer
    x = 53,943.46

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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.