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Finding the Fourth Proportional to 65,655.98, 98,469.57 and 18,898.70

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Solution

The fourth proportional to 65,655.98, 98,469.57 and 18,898.70 is: 28,343.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,655.98 : 98,469.57 = 18,898.70 : x
  2. Step 2: Convert to fraction form
    65,655.98/98,469.57 = 18,898.70/x
  3. Step 3: Cross multiply
    65,655.98x = 98,469.57 × 18,898.70
  4. Step 4: Simplify right side
    65,655.98x = 1,860,946,862.56
  5. Step 5: Solve for x
    x = 1,860,946,862.56/65,655.98
  6. Step 6: Final answer
    x = 28,343.91

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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.