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Finding the Fourth Proportional to 40,702.80, 61,055 and 18,500.68

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Solution

The fourth proportional to 40,702.80, 61,055 and 18,500.68 is: 27,751.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,702.80 : 61,055 = 18,500.68 : x
  2. Step 2: Convert to fraction form
    40,702.80/61,055 = 18,500.68/x
  3. Step 3: Cross multiply
    40,702.80x = 61,055 × 18,500.68
  4. Step 4: Simplify right side
    40,702.80x = 1,129,559,017.40
  5. Step 5: Solve for x
    x = 1,129,559,017.40/40,702.80
  6. Step 6: Final answer
    x = 27,751.38

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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.