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Finding the Fourth Proportional to 78,436.68, 108,234 and 44,442.60

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Solution

The fourth proportional to 78,436.68, 108,234 and 44,442.60 is: 61,325.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,436.68 : 108,234 = 44,442.60 : x
  2. Step 2: Convert to fraction form
    78,436.68/108,234 = 44,442.60/x
  3. Step 3: Cross multiply
    78,436.68x = 108,234 × 44,442.60
  4. Step 4: Simplify right side
    78,436.68x = 4,810,200,368.40
  5. Step 5: Solve for x
    x = 4,810,200,368.40/78,436.68
  6. Step 6: Final answer
    x = 61,325.90

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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.