Home / 51,793.12-77,730.68-20,218.30

Finding the Fourth Proportional to 51,793.12, 77,730.68 and 20,218.30

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Solution

The fourth proportional to 51,793.12, 77,730.68 and 20,218.30 is: 30,343.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,793.12 : 77,730.68 = 20,218.30 : x
  2. Step 2: Convert to fraction form
    51,793.12/77,730.68 = 20,218.30/x
  3. Step 3: Cross multiply
    51,793.12x = 77,730.68 × 20,218.30
  4. Step 4: Simplify right side
    51,793.12x = 1,571,582,106.35
  5. Step 5: Solve for x
    x = 1,571,582,106.35/51,793.12
  6. Step 6: Final answer
    x = 30,343.46

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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.