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Finding the Fourth Proportional to 65,126.52, 97,690.32 and 18,379.80

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Solution

The fourth proportional to 65,126.52, 97,690.32 and 18,379.80 is: 27,569.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,126.52 : 97,690.32 = 18,379.80 : x
  2. Step 2: Convert to fraction form
    65,126.52/97,690.32 = 18,379.80/x
  3. Step 3: Cross multiply
    65,126.52x = 97,690.32 × 18,379.80
  4. Step 4: Simplify right side
    65,126.52x = 1,795,528,543.54
  5. Step 5: Solve for x
    x = 1,795,528,543.54/65,126.52
  6. Step 6: Final answer
    x = 27,569.85

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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.