Home / 76,850.20-106,063.62-45,031.78

Finding the Fourth Proportional to 76,850.20, 106,063.62 and 45,031.78

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Solution

The fourth proportional to 76,850.20, 106,063.62 and 45,031.78 is: 62,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,850.20 : 106,063.62 = 45,031.78 : x
  2. Step 2: Convert to fraction form
    76,850.20/106,063.62 = 45,031.78/x
  3. Step 3: Cross multiply
    76,850.20x = 106,063.62 × 45,031.78
  4. Step 4: Simplify right side
    76,850.20x = 4,776,233,601.84
  5. Step 5: Solve for x
    x = 4,776,233,601.84/76,850.20
  6. Step 6: Final answer
    x = 62,149.92

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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.