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Finding the Fourth Proportional to 53,149.68, 73,351.72 and 39,697.60

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Solution

The fourth proportional to 53,149.68, 73,351.72 and 39,697.60 is: 54,786.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,149.68 : 73,351.72 = 39,697.60 : x
  2. Step 2: Convert to fraction form
    53,149.68/73,351.72 = 39,697.60/x
  3. Step 3: Cross multiply
    53,149.68x = 73,351.72 × 39,697.60
  4. Step 4: Simplify right side
    53,149.68x = 2,911,887,239.87
  5. Step 5: Solve for x
    x = 2,911,887,239.87/53,149.68
  6. Step 6: Final answer
    x = 54,786.54

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1.5x scale

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.