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Finding the Fourth Proportional to 65,957.57, 98,936.35 and 18,572.64

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Solution

The fourth proportional to 65,957.57, 98,936.35 and 18,572.64 is: 27,858.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,957.57 : 98,936.35 = 18,572.64 : x
  2. Step 2: Convert to fraction form
    65,957.57/98,936.35 = 18,572.64/x
  3. Step 3: Cross multiply
    65,957.57x = 98,936.35 × 18,572.64
  4. Step 4: Simplify right side
    65,957.57x = 1,837,509,376.66
  5. Step 5: Solve for x
    x = 1,837,509,376.66/65,957.57
  6. Step 6: Final answer
    x = 27,858.96

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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.