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Finding the Fourth Proportional to 65,879.48, 98,828.70 and 21,495.24

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Solution

The fourth proportional to 65,879.48, 98,828.70 and 21,495.24 is: 32,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,879.48 : 98,828.70 = 21,495.24 : x
  2. Step 2: Convert to fraction form
    65,879.48/98,828.70 = 21,495.24/x
  3. Step 3: Cross multiply
    65,879.48x = 98,828.70 × 21,495.24
  4. Step 4: Simplify right side
    65,879.48x = 2,124,346,625.39
  5. Step 5: Solve for x
    x = 2,124,346,625.39/65,879.48
  6. Step 6: Final answer
    x = 32,245.95

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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.