Home / 91,989.18-137,998.09-29,665.98

Finding the Fourth Proportional to 91,989.18, 137,998.09 and 29,665.98

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Solution

The fourth proportional to 91,989.18, 137,998.09 and 29,665.98 is: 44,503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,989.18 : 137,998.09 = 29,665.98 : x
  2. Step 2: Convert to fraction form
    91,989.18/137,998.09 = 29,665.98/x
  3. Step 3: Cross multiply
    91,989.18x = 137,998.09 × 29,665.98
  4. Step 4: Simplify right side
    91,989.18x = 4,093,848,577.98
  5. Step 5: Solve for x
    x = 4,093,848,577.98/91,989.18
  6. Step 6: Final answer
    x = 44,503.59

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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.