Home / 71,986.10-99,340.14-39,721.01

Finding the Fourth Proportional to 71,986.10, 99,340.14 and 39,721.01

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Solution

The fourth proportional to 71,986.10, 99,340.14 and 39,721.01 is: 54,814.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,986.10 : 99,340.14 = 39,721.01 : x
  2. Step 2: Convert to fraction form
    71,986.10/99,340.14 = 39,721.01/x
  3. Step 3: Cross multiply
    71,986.10x = 99,340.14 × 39,721.01
  4. Step 4: Simplify right side
    71,986.10x = 3,945,890,694.34
  5. Step 5: Solve for x
    x = 3,945,890,694.34/71,986.10
  6. Step 6: Final answer
    x = 54,814.62

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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.