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Finding the Fourth Proportional to 78,586.34, 108,458.37 and 44,136.72

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Solution

The fourth proportional to 78,586.34, 108,458.37 and 44,136.72 is: 60,913.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586.34 : 108,458.37 = 44,136.72 : x
  2. Step 2: Convert to fraction form
    78,586.34/108,458.37 = 44,136.72/x
  3. Step 3: Cross multiply
    78,586.34x = 108,458.37 × 44,136.72
  4. Step 4: Simplify right side
    78,586.34x = 4,786,996,708.35
  5. Step 5: Solve for x
    x = 4,786,996,708.35/78,586.34
  6. Step 6: Final answer
    x = 60,913.85

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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.