Home / 81,811.20-122,630.40-46,675.20

Finding the Fourth Proportional to 81,811.20, 122,630.40 and 46,675.20

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Solution

The fourth proportional to 81,811.20, 122,630.40 and 46,675.20 is: 69,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,811.20 : 122,630.40 = 46,675.20 : x
  2. Step 2: Convert to fraction form
    81,811.20/122,630.40 = 46,675.20/x
  3. Step 3: Cross multiply
    81,811.20x = 122,630.40 × 46,675.20
  4. Step 4: Simplify right side
    81,811.20x = 5,723,798,446.08
  5. Step 5: Solve for x
    x = 5,723,798,446.08/81,811.20
  6. Step 6: Final answer
    x = 69,963.51

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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.