Home / 85,717.45-118,288.78-47,993.05

Finding the Fourth Proportional to 85,717.45, 118,288.78 and 47,993.05

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Solution

The fourth proportional to 85,717.45, 118,288.78 and 47,993.05 is: 66,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.45 : 118,288.78 = 47,993.05 : x
  2. Step 2: Convert to fraction form
    85,717.45/118,288.78 = 47,993.05/x
  3. Step 3: Cross multiply
    85,717.45x = 118,288.78 × 47,993.05
  4. Step 4: Simplify right side
    85,717.45x = 5,677,039,332.98
  5. Step 5: Solve for x
    x = 5,677,039,332.98/85,717.45
  6. Step 6: Final answer
    x = 66,229.68

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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.