Home / 71,660.80-98,890.68-39,828.88

Finding the Fourth Proportional to 71,660.80, 98,890.68 and 39,828.88

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Solution

The fourth proportional to 71,660.80, 98,890.68 and 39,828.88 is: 54,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,660.80 : 98,890.68 = 39,828.88 : x
  2. Step 2: Convert to fraction form
    71,660.80/98,890.68 = 39,828.88/x
  3. Step 3: Cross multiply
    71,660.80x = 98,890.68 × 39,828.88
  4. Step 4: Simplify right side
    71,660.80x = 3,938,705,026.84
  5. Step 5: Solve for x
    x = 3,938,705,026.84/71,660.80
  6. Step 6: Final answer
    x = 54,963.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.