Home / 75,679.20-113,470.20-31,323.60

Finding the Fourth Proportional to 75,679.20, 113,470.20 and 31,323.60

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Solution

The fourth proportional to 75,679.20, 113,470.20 and 31,323.60 is: 46,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,679.20 : 113,470.20 = 31,323.60 : x
  2. Step 2: Convert to fraction form
    75,679.20/113,470.20 = 31,323.60/x
  3. Step 3: Cross multiply
    75,679.20x = 113,470.20 × 31,323.60
  4. Step 4: Simplify right side
    75,679.20x = 3,554,295,156.72
  5. Step 5: Solve for x
    x = 3,554,295,156.72/75,679.20
  6. Step 6: Final answer
    x = 46,965.28

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1.5x scale

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.