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Finding the Fourth Proportional to 76,859.12, 115,305.10 and 26,942.27

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Solution

The fourth proportional to 76,859.12, 115,305.10 and 26,942.27 is: 40,419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,859.12 : 115,305.10 = 26,942.27 : x
  2. Step 2: Convert to fraction form
    76,859.12/115,305.10 = 26,942.27/x
  3. Step 3: Cross multiply
    76,859.12x = 115,305.10 × 26,942.27
  4. Step 4: Simplify right side
    76,859.12x = 3,106,580,492.70
  5. Step 5: Solve for x
    x = 3,106,580,492.70/76,859.12
  6. Step 6: Final answer
    x = 40,419.15

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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.