Home / 55,478.76-83,214.30-20,411.88

Finding the Fourth Proportional to 55,478.76, 83,214.30 and 20,411.88

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Solution

The fourth proportional to 55,478.76, 83,214.30 and 20,411.88 is: 30,616.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,478.76 : 83,214.30 = 20,411.88 : x
  2. Step 2: Convert to fraction form
    55,478.76/83,214.30 = 20,411.88/x
  3. Step 3: Cross multiply
    55,478.76x = 83,214.30 × 20,411.88
  4. Step 4: Simplify right side
    55,478.76x = 1,698,560,305.88
  5. Step 5: Solve for x
    x = 1,698,560,305.88/55,478.76
  6. Step 6: Final answer
    x = 30,616.41

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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.