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Finding the Fourth Proportional to 65,811.40, 98,717.10 and 26,396.80

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Solution

The fourth proportional to 65,811.40, 98,717.10 and 26,396.80 is: 39,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,811.40 : 98,717.10 = 26,396.80 : x
  2. Step 2: Convert to fraction form
    65,811.40/98,717.10 = 26,396.80/x
  3. Step 3: Cross multiply
    65,811.40x = 98,717.10 × 26,396.80
  4. Step 4: Simplify right side
    65,811.40x = 2,605,815,545.28
  5. Step 5: Solve for x
    x = 2,605,815,545.28/65,811.40
  6. Step 6: Final answer
    x = 39,595.20

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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.