Home / 77,969.85-107,610.53-51,190.04

Finding the Fourth Proportional to 77,969.85, 107,610.53 and 51,190.04

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Solution

The fourth proportional to 77,969.85, 107,610.53 and 51,190.04 is: 70,650.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,969.85 : 107,610.53 = 51,190.04 : x
  2. Step 2: Convert to fraction form
    77,969.85/107,610.53 = 51,190.04/x
  3. Step 3: Cross multiply
    77,969.85x = 107,610.53 × 51,190.04
  4. Step 4: Simplify right side
    77,969.85x = 5,508,587,335.12
  5. Step 5: Solve for x
    x = 5,508,587,335.12/77,969.85
  6. Step 6: Final answer
    x = 70,650.22

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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.