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Finding the Fourth Proportional to 53,206.48, 79,809.24 and 20,374.48

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Solution

The fourth proportional to 53,206.48, 79,809.24 and 20,374.48 is: 30,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,206.48 : 79,809.24 = 20,374.48 : x
  2. Step 2: Convert to fraction form
    53,206.48/79,809.24 = 20,374.48/x
  3. Step 3: Cross multiply
    53,206.48x = 79,809.24 × 20,374.48
  4. Step 4: Simplify right side
    53,206.48x = 1,626,071,764.20
  5. Step 5: Solve for x
    x = 1,626,071,764.20/53,206.48
  6. Step 6: Final answer
    x = 30,561.54

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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.