Home / 81,384.60-122,065.20-31,488.24

Finding the Fourth Proportional to 81,384.60, 122,065.20 and 31,488.24

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Solution

The fourth proportional to 81,384.60, 122,065.20 and 31,488.24 is: 47,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,384.60 : 122,065.20 = 31,488.24 : x
  2. Step 2: Convert to fraction form
    81,384.60/122,065.20 = 31,488.24/x
  3. Step 3: Cross multiply
    81,384.60x = 122,065.20 × 31,488.24
  4. Step 4: Simplify right side
    81,384.60x = 3,843,618,313.25
  5. Step 5: Solve for x
    x = 3,843,618,313.25/81,384.60
  6. Step 6: Final answer
    x = 47,227.83

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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.