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Finding the Fourth Proportional to 78,855.84, 118,285.56 and 26,269.56

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Solution

The fourth proportional to 78,855.84, 118,285.56 and 26,269.56 is: 39,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,855.84 : 118,285.56 = 26,269.56 : x
  2. Step 2: Convert to fraction form
    78,855.84/118,285.56 = 26,269.56/x
  3. Step 3: Cross multiply
    78,855.84x = 118,285.56 × 26,269.56
  4. Step 4: Simplify right side
    78,855.84x = 3,107,309,615.55
  5. Step 5: Solve for x
    x = 3,107,309,615.55/78,855.84
  6. Step 6: Final answer
    x = 39,404.94

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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.