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Finding the Fourth Proportional to 65,899.53, 90,937.76 and 39,044.52

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Solution

The fourth proportional to 65,899.53, 90,937.76 and 39,044.52 is: 53,879.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,899.53 : 90,937.76 = 39,044.52 : x
  2. Step 2: Convert to fraction form
    65,899.53/90,937.76 = 39,044.52/x
  3. Step 3: Cross multiply
    65,899.53x = 90,937.76 × 39,044.52
  4. Step 4: Simplify right side
    65,899.53x = 3,550,620,993.85
  5. Step 5: Solve for x
    x = 3,550,620,993.85/65,899.53
  6. Step 6: Final answer
    x = 53,879.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.