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Finding the Fourth Proportional to 77,279.77, 115,927.51 and 26,672.21

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Solution

The fourth proportional to 77,279.77, 115,927.51 and 26,672.21 is: 40,011.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.77 : 115,927.51 = 26,672.21 : x
  2. Step 2: Convert to fraction form
    77,279.77/115,927.51 = 26,672.21/x
  3. Step 3: Cross multiply
    77,279.77x = 115,927.51 × 26,672.21
  4. Step 4: Simplify right side
    77,279.77x = 3,092,042,891.50
  5. Step 5: Solve for x
    x = 3,092,042,891.50/77,279.77
  6. Step 6: Final answer
    x = 40,011.03

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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.