Home / 91,208.31-136,833.54-28,878.81

Finding the Fourth Proportional to 91,208.31, 136,833.54 and 28,878.81

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Solution

The fourth proportional to 91,208.31, 136,833.54 and 28,878.81 is: 43,324.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,208.31 : 136,833.54 = 28,878.81 : x
  2. Step 2: Convert to fraction form
    91,208.31/136,833.54 = 28,878.81/x
  3. Step 3: Cross multiply
    91,208.31x = 136,833.54 × 28,878.81
  4. Step 4: Simplify right side
    91,208.31x = 3,951,589,803.29
  5. Step 5: Solve for x
    x = 3,951,589,803.29/91,208.31
  6. Step 6: Final answer
    x = 43,324.89

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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.