Home / 74,116.64-111,141.34-31,976.79

Finding the Fourth Proportional to 74,116.64, 111,141.34 and 31,976.79

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Solution

The fourth proportional to 74,116.64, 111,141.34 and 31,976.79 is: 47,950.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,116.64 : 111,141.34 = 31,976.79 : x
  2. Step 2: Convert to fraction form
    74,116.64/111,141.34 = 31,976.79/x
  3. Step 3: Cross multiply
    74,116.64x = 111,141.34 × 31,976.79
  4. Step 4: Simplify right side
    74,116.64x = 3,553,943,129.61
  5. Step 5: Solve for x
    x = 3,553,943,129.61/74,116.64
  6. Step 6: Final answer
    x = 47,950.68

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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.