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Finding the Fourth Proportional to 65,808.60, 98,706.78 and 18,427.98

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Solution

The fourth proportional to 65,808.60, 98,706.78 and 18,427.98 is: 27,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.60 : 98,706.78 = 18,427.98 : x
  2. Step 2: Convert to fraction form
    65,808.60/98,706.78 = 18,427.98/x
  3. Step 3: Cross multiply
    65,808.60x = 98,706.78 × 18,427.98
  4. Step 4: Simplify right side
    65,808.60x = 1,818,966,567.70
  5. Step 5: Solve for x
    x = 1,818,966,567.70/65,808.60
  6. Step 6: Final answer
    x = 27,640.26

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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.