Home / 81,966.80-122,885.40-35,181.20

Finding the Fourth Proportional to 81,966.80, 122,885.40 and 35,181.20

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Solution

The fourth proportional to 81,966.80, 122,885.40 and 35,181.20 is: 52,743.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,966.80 : 122,885.40 = 35,181.20 : x
  2. Step 2: Convert to fraction form
    81,966.80/122,885.40 = 35,181.20/x
  3. Step 3: Cross multiply
    81,966.80x = 122,885.40 × 35,181.20
  4. Step 4: Simplify right side
    81,966.80x = 4,323,255,834.48
  5. Step 5: Solve for x
    x = 4,323,255,834.48/81,966.80
  6. Step 6: Final answer
    x = 52,743.99

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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.