Home / 76,282.20-105,211.44-66,834.36

Finding the Fourth Proportional to 76,282.20, 105,211.44 and 66,834.36

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Solution

The fourth proportional to 76,282.20, 105,211.44 and 66,834.36 is: 92,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,282.20 : 105,211.44 = 66,834.36 : x
  2. Step 2: Convert to fraction form
    76,282.20/105,211.44 = 66,834.36/x
  3. Step 3: Cross multiply
    76,282.20x = 105,211.44 × 66,834.36
  4. Step 4: Simplify right side
    76,282.20x = 7,031,739,257.08
  5. Step 5: Solve for x
    x = 7,031,739,257.08/76,282.20
  6. Step 6: Final answer
    x = 92,180.60

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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.