Home / 81,966.40-122,949.60-58,346.80

Finding the Fourth Proportional to 81,966.40, 122,949.60 and 58,346.80

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Solution

The fourth proportional to 81,966.40, 122,949.60 and 58,346.80 is: 87,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,966.40 : 122,949.60 = 58,346.80 : x
  2. Step 2: Convert to fraction form
    81,966.40/122,949.60 = 58,346.80/x
  3. Step 3: Cross multiply
    81,966.40x = 122,949.60 × 58,346.80
  4. Step 4: Simplify right side
    81,966.40x = 7,173,715,721.28
  5. Step 5: Solve for x
    x = 7,173,715,721.28/81,966.40
  6. Step 6: Final answer
    x = 87,520.20

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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.