Home / 81,246.40-121,941.60-47,924.80

Finding the Fourth Proportional to 81,246.40, 121,941.60 and 47,924.80

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Solution

The fourth proportional to 81,246.40, 121,941.60 and 47,924.80 is: 71,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,246.40 : 121,941.60 = 47,924.80 : x
  2. Step 2: Convert to fraction form
    81,246.40/121,941.60 = 47,924.80/x
  3. Step 3: Cross multiply
    81,246.40x = 121,941.60 × 47,924.80
  4. Step 4: Simplify right side
    81,246.40x = 5,844,026,791.68
  5. Step 5: Solve for x
    x = 5,844,026,791.68/81,246.40
  6. Step 6: Final answer
    x = 71,929.67

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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.