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Finding the Fourth Proportional to 65,387.63, 98,082.35 and 18,640.50

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Solution

The fourth proportional to 65,387.63, 98,082.35 and 18,640.50 is: 27,961.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,387.63 : 98,082.35 = 18,640.50 : x
  2. Step 2: Convert to fraction form
    65,387.63/98,082.35 = 18,640.50/x
  3. Step 3: Cross multiply
    65,387.63x = 98,082.35 × 18,640.50
  4. Step 4: Simplify right side
    65,387.63x = 1,828,304,021.87
  5. Step 5: Solve for x
    x = 1,828,304,021.87/65,387.63
  6. Step 6: Final answer
    x = 27,961.01

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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.