Home / 51,320.40-76,964.60-20,165.20

Finding the Fourth Proportional to 51,320.40, 76,964.60 and 20,165.20

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Solution

The fourth proportional to 51,320.40, 76,964.60 and 20,165.20 is: 30,241.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,320.40 : 76,964.60 = 20,165.20 : x
  2. Step 2: Convert to fraction form
    51,320.40/76,964.60 = 20,165.20/x
  3. Step 3: Cross multiply
    51,320.40x = 76,964.60 × 20,165.20
  4. Step 4: Simplify right side
    51,320.40x = 1,552,006,551.92
  5. Step 5: Solve for x
    x = 1,552,006,551.92/51,320.40
  6. Step 6: Final answer
    x = 30,241.51

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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.