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Finding the Fourth Proportional to 65,940.47, 98,869.09 and 36,378.91

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Solution

The fourth proportional to 65,940.47, 98,869.09 and 36,378.91 is: 54,545.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,940.47 : 98,869.09 = 36,378.91 : x
  2. Step 2: Convert to fraction form
    65,940.47/98,869.09 = 36,378.91/x
  3. Step 3: Cross multiply
    65,940.47x = 98,869.09 × 36,378.91
  4. Step 4: Simplify right side
    65,940.47x = 3,596,749,726.89
  5. Step 5: Solve for x
    x = 3,596,749,726.89/65,940.47
  6. Step 6: Final answer
    x = 54,545.41

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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.