Home / 51,976.68-78,009.66-20,833.32

Finding the Fourth Proportional to 51,976.68, 78,009.66 and 20,833.32

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Solution

The fourth proportional to 51,976.68, 78,009.66 and 20,833.32 is: 31,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,976.68 : 78,009.66 = 20,833.32 : x
  2. Step 2: Convert to fraction form
    51,976.68/78,009.66 = 20,833.32/x
  3. Step 3: Cross multiply
    51,976.68x = 78,009.66 × 20,833.32
  4. Step 4: Simplify right side
    51,976.68x = 1,625,200,209.87
  5. Step 5: Solve for x
    x = 1,625,200,209.87/51,976.68
  6. Step 6: Final answer
    x = 31,267.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.