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Finding the Fourth Proportional to 77,857.43, 116,926.93 and 71,927.93

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Solution

The fourth proportional to 77,857.43, 116,926.93 and 71,927.93 is: 108,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,857.43 : 116,926.93 = 71,927.93 : x
  2. Step 2: Convert to fraction form
    77,857.43/116,926.93 = 71,927.93/x
  3. Step 3: Cross multiply
    77,857.43x = 116,926.93 × 71,927.93
  4. Step 4: Simplify right side
    77,857.43x = 8,410,311,271.70
  5. Step 5: Solve for x
    x = 8,410,311,271.70/77,857.43
  6. Step 6: Final answer
    x = 108,021.96

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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.