Home / 82,931.12-124,394.34-20,601.44

Finding the Fourth Proportional to 82,931.12, 124,394.34 and 20,601.44

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Solution

The fourth proportional to 82,931.12, 124,394.34 and 20,601.44 is: 30,901.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,931.12 : 124,394.34 = 20,601.44 : x
  2. Step 2: Convert to fraction form
    82,931.12/124,394.34 = 20,601.44/x
  3. Step 3: Cross multiply
    82,931.12x = 124,394.34 × 20,601.44
  4. Step 4: Simplify right side
    82,931.12x = 2,562,702,531.85
  5. Step 5: Solve for x
    x = 2,562,702,531.85/82,931.12
  6. Step 6: Final answer
    x = 30,901.58

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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.