Home / 81,948.22-122,742.50-67,747.30

Finding the Fourth Proportional to 81,948.22, 122,742.50 and 67,747.30

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Solution

The fourth proportional to 81,948.22, 122,742.50 and 67,747.30 is: 101,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,948.22 : 122,742.50 = 67,747.30 : x
  2. Step 2: Convert to fraction form
    81,948.22/122,742.50 = 67,747.30/x
  3. Step 3: Cross multiply
    81,948.22x = 122,742.50 × 67,747.30
  4. Step 4: Simplify right side
    81,948.22x = 8,315,472,970.25
  5. Step 5: Solve for x
    x = 8,315,472,970.25/81,948.22
  6. Step 6: Final answer
    x = 101,472.28

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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.