Home / 55,216.49-82,830.20-20,158.88

Finding the Fourth Proportional to 55,216.49, 82,830.20 and 20,158.88

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Solution

The fourth proportional to 55,216.49, 82,830.20 and 20,158.88 is: 30,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,216.49 : 82,830.20 = 20,158.88 : x
  2. Step 2: Convert to fraction form
    55,216.49/82,830.20 = 20,158.88/x
  3. Step 3: Cross multiply
    55,216.49x = 82,830.20 × 20,158.88
  4. Step 4: Simplify right side
    55,216.49x = 1,669,763,547.23
  5. Step 5: Solve for x
    x = 1,669,763,547.23/55,216.49
  6. Step 6: Final answer
    x = 30,240.31

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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.