Home / 91,261.86-136,914.78-28,932.36

Finding the Fourth Proportional to 91,261.86, 136,914.78 and 28,932.36

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Solution

The fourth proportional to 91,261.86, 136,914.78 and 28,932.36 is: 43,405.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,261.86 : 136,914.78 = 28,932.36 : x
  2. Step 2: Convert to fraction form
    91,261.86/136,914.78 = 28,932.36/x
  3. Step 3: Cross multiply
    91,261.86x = 136,914.78 × 28,932.36
  4. Step 4: Simplify right side
    91,261.86x = 3,961,267,704.28
  5. Step 5: Solve for x
    x = 3,961,267,704.28/91,261.86
  6. Step 6: Final answer
    x = 43,405.51

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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.