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Finding the Fourth Proportional to 65,857.80, 98,811.96 and 26,426.20

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Solution

The fourth proportional to 65,857.80, 98,811.96 and 26,426.20 is: 39,649.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,857.80 : 98,811.96 = 26,426.20 : x
  2. Step 2: Convert to fraction form
    65,857.80/98,811.96 = 26,426.20/x
  3. Step 3: Cross multiply
    65,857.80x = 98,811.96 × 26,426.20
  4. Step 4: Simplify right side
    65,857.80x = 2,611,224,617.35
  5. Step 5: Solve for x
    x = 2,611,224,617.35/65,857.80
  6. Step 6: Final answer
    x = 39,649.44

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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.