Home / 76,160.45-105,105.33-42,172.65

Finding the Fourth Proportional to 76,160.45, 105,105.33 and 42,172.65

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Solution

The fourth proportional to 76,160.45, 105,105.33 and 42,172.65 is: 58,200.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,160.45 : 105,105.33 = 42,172.65 : x
  2. Step 2: Convert to fraction form
    76,160.45/105,105.33 = 42,172.65/x
  3. Step 3: Cross multiply
    76,160.45x = 105,105.33 × 42,172.65
  4. Step 4: Simplify right side
    76,160.45x = 4,432,570,295.22
  5. Step 5: Solve for x
    x = 4,432,570,295.22/76,160.45
  6. Step 6: Final answer
    x = 58,200.42

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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.