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Finding the Fourth Proportional to 65,988.21, 98,982.21 and 18,603.21

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Solution

The fourth proportional to 65,988.21, 98,982.21 and 18,603.21 is: 27,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,988.21 : 98,982.21 = 18,603.21 : x
  2. Step 2: Convert to fraction form
    65,988.21/98,982.21 = 18,603.21/x
  3. Step 3: Cross multiply
    65,988.21x = 98,982.21 × 18,603.21
  4. Step 4: Simplify right side
    65,988.21x = 1,841,386,838.89
  5. Step 5: Solve for x
    x = 1,841,386,838.89/65,988.21
  6. Step 6: Final answer
    x = 27,904.79

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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.