Home / 76,279.32-114,426.57-28,260.78

Finding the Fourth Proportional to 76,279.32, 114,426.57 and 28,260.78

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Solution

The fourth proportional to 76,279.32, 114,426.57 and 28,260.78 is: 42,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,279.32 : 114,426.57 = 28,260.78 : x
  2. Step 2: Convert to fraction form
    76,279.32/114,426.57 = 28,260.78/x
  3. Step 3: Cross multiply
    76,279.32x = 114,426.57 × 28,260.78
  4. Step 4: Simplify right side
    76,279.32x = 3,233,784,120.92
  5. Step 5: Solve for x
    x = 3,233,784,120.92/76,279.32
  6. Step 6: Final answer
    x = 42,393.98

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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.