Home / 71,571.04-107,785.20-65,186.56

Finding the Fourth Proportional to 71,571.04, 107,785.20 and 65,186.56

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Solution

The fourth proportional to 71,571.04, 107,785.20 and 65,186.56 is: 98,170.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,571.04 : 107,785.20 = 65,186.56 : x
  2. Step 2: Convert to fraction form
    71,571.04/107,785.20 = 65,186.56/x
  3. Step 3: Cross multiply
    71,571.04x = 107,785.20 × 65,186.56
  4. Step 4: Simplify right side
    71,571.04x = 7,026,146,406.91
  5. Step 5: Solve for x
    x = 7,026,146,406.91/71,571.04
  6. Step 6: Final answer
    x = 98,170.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.