Home / 74,115.91-111,146.83-31,977.89

Finding the Fourth Proportional to 74,115.91, 111,146.83 and 31,977.89

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Solution

The fourth proportional to 74,115.91, 111,146.83 and 31,977.89 is: 47,955.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,115.91 : 111,146.83 = 31,977.89 : x
  2. Step 2: Convert to fraction form
    74,115.91/111,146.83 = 31,977.89/x
  3. Step 3: Cross multiply
    74,115.91x = 111,146.83 × 31,977.89
  4. Step 4: Simplify right side
    74,115.91x = 3,554,241,064.59
  5. Step 5: Solve for x
    x = 3,554,241,064.59/74,115.91
  6. Step 6: Final answer
    x = 47,955.17

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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.