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Finding the Fourth Proportional to 53,207.48, 79,810.74 and 20,375.48

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Solution

The fourth proportional to 53,207.48, 79,810.74 and 20,375.48 is: 30,563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,207.48 : 79,810.74 = 20,375.48 : x
  2. Step 2: Convert to fraction form
    53,207.48/79,810.74 = 20,375.48/x
  3. Step 3: Cross multiply
    53,207.48x = 79,810.74 × 20,375.48
  4. Step 4: Simplify right side
    53,207.48x = 1,626,182,136.66
  5. Step 5: Solve for x
    x = 1,626,182,136.66/53,207.48
  6. Step 6: Final answer
    x = 30,563.04

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1.5x scale

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.