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Finding the Fourth Proportional to 64,879.80, 97,352.10 and 36,821.40

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Solution

The fourth proportional to 64,879.80, 97,352.10 and 36,821.40 is: 55,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.80 : 97,352.10 = 36,821.40 : x
  2. Step 2: Convert to fraction form
    64,879.80/97,352.10 = 36,821.40/x
  3. Step 3: Cross multiply
    64,879.80x = 97,352.10 × 36,821.40
  4. Step 4: Simplify right side
    64,879.80x = 3,584,640,614.94
  5. Step 5: Solve for x
    x = 3,584,640,614.94/64,879.80
  6. Step 6: Final answer
    x = 55,250.49

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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.