Home / 76,351.04-105,342.88-49,494.68

Finding the Fourth Proportional to 76,351.04, 105,342.88 and 49,494.68

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Solution

The fourth proportional to 76,351.04, 105,342.88 and 49,494.68 is: 68,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,351.04 : 105,342.88 = 49,494.68 : x
  2. Step 2: Convert to fraction form
    76,351.04/105,342.88 = 49,494.68/x
  3. Step 3: Cross multiply
    76,351.04x = 105,342.88 × 49,494.68
  4. Step 4: Simplify right side
    76,351.04x = 5,213,912,135.88
  5. Step 5: Solve for x
    x = 5,213,912,135.88/76,351.04
  6. Step 6: Final answer
    x = 68,288.69

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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.