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Finding the Fourth Proportional to 53,301.99, 79,938.39 and 20,019.48

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Solution

The fourth proportional to 53,301.99, 79,938.39 and 20,019.48 is: 30,023.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,301.99 : 79,938.39 = 20,019.48 : x
  2. Step 2: Convert to fraction form
    53,301.99/79,938.39 = 20,019.48/x
  3. Step 3: Cross multiply
    53,301.99x = 79,938.39 × 20,019.48
  4. Step 4: Simplify right side
    53,301.99x = 1,600,324,999.84
  5. Step 5: Solve for x
    x = 1,600,324,999.84/53,301.99
  6. Step 6: Final answer
    x = 30,023.74

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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.