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Finding the Fourth Proportional to 65,722.70, 98,584.05 and 18,337.70

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Solution

The fourth proportional to 65,722.70, 98,584.05 and 18,337.70 is: 27,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,722.70 : 98,584.05 = 18,337.70 : x
  2. Step 2: Convert to fraction form
    65,722.70/98,584.05 = 18,337.70/x
  3. Step 3: Cross multiply
    65,722.70x = 98,584.05 × 18,337.70
  4. Step 4: Simplify right side
    65,722.70x = 1,807,804,733.69
  5. Step 5: Solve for x
    x = 1,807,804,733.69/65,722.70
  6. Step 6: Final answer
    x = 27,506.55

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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.