Home / 91,255.86-136,905.78-28,926.36

Finding the Fourth Proportional to 91,255.86, 136,905.78 and 28,926.36

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Solution

The fourth proportional to 91,255.86, 136,905.78 and 28,926.36 is: 43,396.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,255.86 : 136,905.78 = 28,926.36 : x
  2. Step 2: Convert to fraction form
    91,255.86/136,905.78 = 28,926.36/x
  3. Step 3: Cross multiply
    91,255.86x = 136,905.78 × 28,926.36
  4. Step 4: Simplify right side
    91,255.86x = 3,960,185,878.36
  5. Step 5: Solve for x
    x = 3,960,185,878.36/91,255.86
  6. Step 6: Final answer
    x = 43,396.51

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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.