Home / 49,110.89-67,781.25-28,972.77

Finding the Fourth Proportional to 49,110.89, 67,781.25 and 28,972.77

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Solution

The fourth proportional to 49,110.89, 67,781.25 and 28,972.77 is: 39,987.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,110.89 : 67,781.25 = 28,972.77 : x
  2. Step 2: Convert to fraction form
    49,110.89/67,781.25 = 28,972.77/x
  3. Step 3: Cross multiply
    49,110.89x = 67,781.25 × 28,972.77
  4. Step 4: Simplify right side
    49,110.89x = 1,963,810,566.56
  5. Step 5: Solve for x
    x = 1,963,810,566.56/49,110.89
  6. Step 6: Final answer
    x = 39,987.28

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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.