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Finding the Fourth Proportional to 76,695.72, 115,077.09 and 26,811.63

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Solution

The fourth proportional to 76,695.72, 115,077.09 and 26,811.63 is: 40,229.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,695.72 : 115,077.09 = 26,811.63 : x
  2. Step 2: Convert to fraction form
    76,695.72/115,077.09 = 26,811.63/x
  3. Step 3: Cross multiply
    76,695.72x = 115,077.09 × 26,811.63
  4. Step 4: Simplify right side
    76,695.72x = 3,085,404,358.56
  5. Step 5: Solve for x
    x = 3,085,404,358.56/76,695.72
  6. Step 6: Final answer
    x = 40,229.16

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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.