Home / 91,431.84-137,118.42-29,087.76

Finding the Fourth Proportional to 91,431.84, 137,118.42 and 29,087.76

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Solution

The fourth proportional to 91,431.84, 137,118.42 and 29,087.76 is: 43,622.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,431.84 : 137,118.42 = 29,087.76 : x
  2. Step 2: Convert to fraction form
    91,431.84/137,118.42 = 29,087.76/x
  3. Step 3: Cross multiply
    91,431.84x = 137,118.42 × 29,087.76
  4. Step 4: Simplify right side
    91,431.84x = 3,988,467,692.54
  5. Step 5: Solve for x
    x = 3,988,467,692.54/91,431.84
  6. Step 6: Final answer
    x = 43,622.31

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1.5x scale

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.