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Finding the Fourth Proportional to 78,627.68, 108,505.12 and 44,635.86

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Solution

The fourth proportional to 78,627.68, 108,505.12 and 44,635.86 is: 61,596.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,627.68 : 108,505.12 = 44,635.86 : x
  2. Step 2: Convert to fraction form
    78,627.68/108,505.12 = 44,635.86/x
  3. Step 3: Cross multiply
    78,627.68x = 108,505.12 × 44,635.86
  4. Step 4: Simplify right side
    78,627.68x = 4,843,219,345.60
  5. Step 5: Solve for x
    x = 4,843,219,345.60/78,627.68
  6. Step 6: Final answer
    x = 61,596.87

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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.