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Finding the Fourth Proportional to 65,726.40, 98,630.10 and 26,279.40

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Solution

The fourth proportional to 65,726.40, 98,630.10 and 26,279.40 is: 39,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,726.40 : 98,630.10 = 26,279.40 : x
  2. Step 2: Convert to fraction form
    65,726.40/98,630.10 = 26,279.40/x
  3. Step 3: Cross multiply
    65,726.40x = 98,630.10 × 26,279.40
  4. Step 4: Simplify right side
    65,726.40x = 2,591,939,849.94
  5. Step 5: Solve for x
    x = 2,591,939,849.94/65,726.40
  6. Step 6: Final answer
    x = 39,435.29

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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.