Home / 71,739.48-99,004.14-39,909

Finding the Fourth Proportional to 71,739.48, 99,004.14 and 39,909

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Solution

The fourth proportional to 71,739.48, 99,004.14 and 39,909 is: 55,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,739.48 : 99,004.14 = 39,909 : x
  2. Step 2: Convert to fraction form
    71,739.48/99,004.14 = 39,909/x
  3. Step 3: Cross multiply
    71,739.48x = 99,004.14 × 39,909
  4. Step 4: Simplify right side
    71,739.48x = 3,951,156,223.26
  5. Step 5: Solve for x
    x = 3,951,156,223.26/71,739.48
  6. Step 6: Final answer
    x = 55,076.45

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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.