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Finding the Fourth Proportional to 65,792.12, 98,687.31 and 15,871.86

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Solution

The fourth proportional to 65,792.12, 98,687.31 and 15,871.86 is: 23,807.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,792.12 : 98,687.31 = 15,871.86 : x
  2. Step 2: Convert to fraction form
    65,792.12/98,687.31 = 15,871.86/x
  3. Step 3: Cross multiply
    65,792.12x = 98,687.31 × 15,871.86
  4. Step 4: Simplify right side
    65,792.12x = 1,566,351,168.10
  5. Step 5: Solve for x
    x = 1,566,351,168.10/65,792.12
  6. Step 6: Final answer
    x = 23,807.58

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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.