Home / 85,243.21-117,686.04-75,785.61

Finding the Fourth Proportional to 85,243.21, 117,686.04 and 75,785.61

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Solution

The fourth proportional to 85,243.21, 117,686.04 and 75,785.61 is: 104,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,243.21 : 117,686.04 = 75,785.61 : x
  2. Step 2: Convert to fraction form
    85,243.21/117,686.04 = 75,785.61/x
  3. Step 3: Cross multiply
    85,243.21x = 117,686.04 × 75,785.61
  4. Step 4: Simplify right side
    85,243.21x = 8,918,907,362.53
  5. Step 5: Solve for x
    x = 8,918,907,362.53/85,243.21
  6. Step 6: Final answer
    x = 104,628.95

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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.