Home / 74,581.40-111,872.10-61,406.09

Finding the Fourth Proportional to 74,581.40, 111,872.10 and 61,406.09

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Solution

The fourth proportional to 74,581.40, 111,872.10 and 61,406.09 is: 92,109.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,581.40 : 111,872.10 = 61,406.09 : x
  2. Step 2: Convert to fraction form
    74,581.40/111,872.10 = 61,406.09/x
  3. Step 3: Cross multiply
    74,581.40x = 111,872.10 × 61,406.09
  4. Step 4: Simplify right side
    74,581.40x = 6,869,628,241.09
  5. Step 5: Solve for x
    x = 6,869,628,241.09/74,581.40
  6. Step 6: Final answer
    x = 92,109.14

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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.