Home / 76,140.20-113,991.60-46,615.70

Finding the Fourth Proportional to 76,140.20, 113,991.60 and 46,615.70

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Solution

The fourth proportional to 76,140.20, 113,991.60 and 46,615.70 is: 69,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,140.20 : 113,991.60 = 46,615.70 : x
  2. Step 2: Convert to fraction form
    76,140.20/113,991.60 = 46,615.70/x
  3. Step 3: Cross multiply
    76,140.20x = 113,991.60 × 46,615.70
  4. Step 4: Simplify right side
    76,140.20x = 5,313,798,228.12
  5. Step 5: Solve for x
    x = 5,313,798,228.12/76,140.20
  6. Step 6: Final answer
    x = 69,789.65

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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.