Home / 76,203.72-105,161.04-42,212.21

Finding the Fourth Proportional to 76,203.72, 105,161.04 and 42,212.21

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Solution

The fourth proportional to 76,203.72, 105,161.04 and 42,212.21 is: 58,252.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,203.72 : 105,161.04 = 42,212.21 : x
  2. Step 2: Convert to fraction form
    76,203.72/105,161.04 = 42,212.21/x
  3. Step 3: Cross multiply
    76,203.72x = 105,161.04 × 42,212.21
  4. Step 4: Simplify right side
    76,203.72x = 4,439,079,378.49
  5. Step 5: Solve for x
    x = 4,439,079,378.49/76,203.72
  6. Step 6: Final answer
    x = 58,252.79

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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.