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Finding the Fourth Proportional to 65,790.53, 98,692.05 and 18,405.63

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Solution

The fourth proportional to 65,790.53, 98,692.05 and 18,405.63 is: 27,610.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,790.53 : 98,692.05 = 18,405.63 : x
  2. Step 2: Convert to fraction form
    65,790.53/98,692.05 = 18,405.63/x
  3. Step 3: Cross multiply
    65,790.53x = 98,692.05 × 18,405.63
  4. Step 4: Simplify right side
    65,790.53x = 1,816,489,356.24
  5. Step 5: Solve for x
    x = 1,816,489,356.24/65,790.53
  6. Step 6: Final answer
    x = 27,610.19

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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.