Home / 82,905.90-124,344.45-30,288.30

Finding the Fourth Proportional to 82,905.90, 124,344.45 and 30,288.30

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Solution

The fourth proportional to 82,905.90, 124,344.45 and 30,288.30 is: 45,427.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,905.90 : 124,344.45 = 30,288.30 : x
  2. Step 2: Convert to fraction form
    82,905.90/124,344.45 = 30,288.30/x
  3. Step 3: Cross multiply
    82,905.90x = 124,344.45 × 30,288.30
  4. Step 4: Simplify right side
    82,905.90x = 3,766,182,004.94
  5. Step 5: Solve for x
    x = 3,766,182,004.94/82,905.90
  6. Step 6: Final answer
    x = 45,427.19

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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.