Home / 76,286.10-105,281.05-42,305.24

Finding the Fourth Proportional to 76,286.10, 105,281.05 and 42,305.24

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Solution

The fourth proportional to 76,286.10, 105,281.05 and 42,305.24 is: 58,384.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,286.10 : 105,281.05 = 42,305.24 : x
  2. Step 2: Convert to fraction form
    76,286.10/105,281.05 = 42,305.24/x
  3. Step 3: Cross multiply
    76,286.10x = 105,281.05 × 42,305.24
  4. Step 4: Simplify right side
    76,286.10x = 4,453,940,087.70
  5. Step 5: Solve for x
    x = 4,453,940,087.70/76,286.10
  6. Step 6: Final answer
    x = 58,384.69

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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.