Home / 91,241.05-136,865.35-31,310.72

Finding the Fourth Proportional to 91,241.05, 136,865.35 and 31,310.72

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Solution

The fourth proportional to 91,241.05, 136,865.35 and 31,310.72 is: 46,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,241.05 : 136,865.35 = 31,310.72 : x
  2. Step 2: Convert to fraction form
    91,241.05/136,865.35 = 31,310.72/x
  3. Step 3: Cross multiply
    91,241.05x = 136,865.35 × 31,310.72
  4. Step 4: Simplify right side
    91,241.05x = 4,285,352,343.49
  5. Step 5: Solve for x
    x = 4,285,352,343.49/91,241.05
  6. Step 6: Final answer
    x = 46,967.37

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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.