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Finding the Fourth Proportional to 77,586.80, 107,069.74 and 43,595.42

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Solution

The fourth proportional to 77,586.80, 107,069.74 and 43,595.42 is: 60,161.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,586.80 : 107,069.74 = 43,595.42 : x
  2. Step 2: Convert to fraction form
    77,586.80/107,069.74 = 43,595.42/x
  3. Step 3: Cross multiply
    77,586.80x = 107,069.74 × 43,595.42
  4. Step 4: Simplify right side
    77,586.80x = 4,667,749,640.25
  5. Step 5: Solve for x
    x = 4,667,749,640.25/77,586.80
  6. Step 6: Final answer
    x = 60,161.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.