Home / 76,217.49-105,169.64-42,217.56

Finding the Fourth Proportional to 76,217.49, 105,169.64 and 42,217.56

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Solution

The fourth proportional to 76,217.49, 105,169.64 and 42,217.56 is: 58,254.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,217.49 : 105,169.64 = 42,217.56 : x
  2. Step 2: Convert to fraction form
    76,217.49/105,169.64 = 42,217.56/x
  3. Step 3: Cross multiply
    76,217.49x = 105,169.64 × 42,217.56
  4. Step 4: Simplify right side
    76,217.49x = 4,440,005,375.79
  5. Step 5: Solve for x
    x = 4,440,005,375.79/76,217.49
  6. Step 6: Final answer
    x = 58,254.42

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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.