Home / 76,278.36-105,262.80-42,286.68

Finding the Fourth Proportional to 76,278.36, 105,262.80 and 42,286.68

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Solution

The fourth proportional to 76,278.36, 105,262.80 and 42,286.68 is: 58,354.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.36 : 105,262.80 = 42,286.68 : x
  2. Step 2: Convert to fraction form
    76,278.36/105,262.80 = 42,286.68/x
  3. Step 3: Cross multiply
    76,278.36x = 105,262.80 × 42,286.68
  4. Step 4: Simplify right side
    76,278.36x = 4,451,214,339.50
  5. Step 5: Solve for x
    x = 4,451,214,339.50/76,278.36
  6. Step 6: Final answer
    x = 58,354.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.