Home / 91,914.37-137,893.73-31,934.12

Finding the Fourth Proportional to 91,914.37, 137,893.73 and 31,934.12

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Solution

The fourth proportional to 91,914.37, 137,893.73 and 31,934.12 is: 47,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,914.37 : 137,893.73 = 31,934.12 : x
  2. Step 2: Convert to fraction form
    91,914.37/137,893.73 = 31,934.12/x
  3. Step 3: Cross multiply
    91,914.37x = 137,893.73 × 31,934.12
  4. Step 4: Simplify right side
    91,914.37x = 4,403,514,071.93
  5. Step 5: Solve for x
    x = 4,403,514,071.93/91,914.37
  6. Step 6: Final answer
    x = 47,908.88

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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.