Home / 45,129.22-67,732.71-21,775.30

Finding the Fourth Proportional to 45,129.22, 67,732.71 and 21,775.30

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Solution

The fourth proportional to 45,129.22, 67,732.71 and 21,775.30 is: 32,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.22 : 67,732.71 = 21,775.30 : x
  2. Step 2: Convert to fraction form
    45,129.22/67,732.71 = 21,775.30/x
  3. Step 3: Cross multiply
    45,129.22x = 67,732.71 × 21,775.30
  4. Step 4: Simplify right side
    45,129.22x = 1,474,900,080.06
  5. Step 5: Solve for x
    x = 1,474,900,080.06/45,129.22
  6. Step 6: Final answer
    x = 32,681.71

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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.