Home / 69,419.81-103,990.98-31,928.51

Finding the Fourth Proportional to 69,419.81, 103,990.98 and 31,928.51

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Solution

The fourth proportional to 69,419.81, 103,990.98 and 31,928.51 is: 47,828.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,419.81 : 103,990.98 = 31,928.51 : x
  2. Step 2: Convert to fraction form
    69,419.81/103,990.98 = 31,928.51/x
  3. Step 3: Cross multiply
    69,419.81x = 103,990.98 × 31,928.51
  4. Step 4: Simplify right side
    69,419.81x = 3,320,277,044.84
  5. Step 5: Solve for x
    x = 3,320,277,044.84/69,419.81
  6. Step 6: Final answer
    x = 47,828.96

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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.