Home / 71,810.85-99,096.30-39,979.07

Finding the Fourth Proportional to 71,810.85, 99,096.30 and 39,979.07

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Solution

The fourth proportional to 71,810.85, 99,096.30 and 39,979.07 is: 55,169.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,810.85 : 99,096.30 = 39,979.07 : x
  2. Step 2: Convert to fraction form
    71,810.85/99,096.30 = 39,979.07/x
  3. Step 3: Cross multiply
    71,810.85x = 99,096.30 × 39,979.07
  4. Step 4: Simplify right side
    71,810.85x = 3,961,777,418.96
  5. Step 5: Solve for x
    x = 3,961,777,418.96/71,810.85
  6. Step 6: Final answer
    x = 55,169.62

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1.5x scale

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.