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Finding the Fourth Proportional to 65,355.80, 98,037.42 and 18,605

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Solution

The fourth proportional to 65,355.80, 98,037.42 and 18,605 is: 27,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,355.80 : 98,037.42 = 18,605 : x
  2. Step 2: Convert to fraction form
    65,355.80/98,037.42 = 18,605/x
  3. Step 3: Cross multiply
    65,355.80x = 98,037.42 × 18,605
  4. Step 4: Simplify right side
    65,355.80x = 1,823,986,199.10
  5. Step 5: Solve for x
    x = 1,823,986,199.10/65,355.80
  6. Step 6: Final answer
    x = 27,908.56

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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.