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Finding the Fourth Proportional to 103,637.67, 155,456.51 and 28,757.82

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Solution

The fourth proportional to 103,637.67, 155,456.51 and 28,757.82 is: 43,136.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,637.67 : 155,456.51 = 28,757.82 : x
  2. Step 2: Convert to fraction form
    103,637.67/155,456.51 = 28,757.82/x
  3. Step 3: Cross multiply
    103,637.67x = 155,456.51 × 28,757.82
  4. Step 4: Simplify right side
    103,637.67x = 4,470,590,332.41
  5. Step 5: Solve for x
    x = 4,470,590,332.41/103,637.67
  6. Step 6: Final answer
    x = 43,136.73

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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.