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Finding the Fourth Proportional to 86,427, 119,269.26 and 48,702.60

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Solution

The fourth proportional to 86,427, 119,269.26 and 48,702.60 is: 67,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,427 : 119,269.26 = 48,702.60 : x
  2. Step 2: Convert to fraction form
    86,427/119,269.26 = 48,702.60/x
  3. Step 3: Cross multiply
    86,427x = 119,269.26 × 48,702.60
  4. Step 4: Simplify right side
    86,427x = 5,808,723,062.08
  5. Step 5: Solve for x
    x = 5,808,723,062.08/86,427
  6. Step 6: Final answer
    x = 67,209.59

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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.