Home / 91,913.38-137,889.67-31,943.64

Finding the Fourth Proportional to 91,913.38, 137,889.67 and 31,943.64

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Solution

The fourth proportional to 91,913.38, 137,889.67 and 31,943.64 is: 47,922.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,913.38 : 137,889.67 = 31,943.64 : x
  2. Step 2: Convert to fraction form
    91,913.38/137,889.67 = 31,943.64/x
  3. Step 3: Cross multiply
    91,913.38x = 137,889.67 × 31,943.64
  4. Step 4: Simplify right side
    91,913.38x = 4,404,697,997.66
  5. Step 5: Solve for x
    x = 4,404,697,997.66/91,913.38
  6. Step 6: Final answer
    x = 47,922.27

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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.