Home / 55,272.70-82,941.45-20,215.90

Finding the Fourth Proportional to 55,272.70, 82,941.45 and 20,215.90

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Solution

The fourth proportional to 55,272.70, 82,941.45 and 20,215.90 is: 30,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,272.70 : 82,941.45 = 20,215.90 : x
  2. Step 2: Convert to fraction form
    55,272.70/82,941.45 = 20,215.90/x
  3. Step 3: Cross multiply
    55,272.70x = 82,941.45 × 20,215.90
  4. Step 4: Simplify right side
    55,272.70x = 1,676,736,059.06
  5. Step 5: Solve for x
    x = 1,676,736,059.06/55,272.70
  6. Step 6: Final answer
    x = 30,335.70

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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.