Home / 76,776.45-115,098.45-31,190.05

Finding the Fourth Proportional to 76,776.45, 115,098.45 and 31,190.05

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Solution

The fourth proportional to 76,776.45, 115,098.45 and 31,190.05 is: 46,758.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,776.45 : 115,098.45 = 31,190.05 : x
  2. Step 2: Convert to fraction form
    76,776.45/115,098.45 = 31,190.05/x
  3. Step 3: Cross multiply
    76,776.45x = 115,098.45 × 31,190.05
  4. Step 4: Simplify right side
    76,776.45x = 3,589,926,410.42
  5. Step 5: Solve for x
    x = 3,589,926,410.42/76,776.45
  6. Step 6: Final answer
    x = 46,758.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.