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Finding the Fourth Proportional to 35,608.48, 53,394.48 and 20,820.64

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Solution

The fourth proportional to 35,608.48, 53,394.48 and 20,820.64 is: 31,220.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,608.48 : 53,394.48 = 20,820.64 : x
  2. Step 2: Convert to fraction form
    35,608.48/53,394.48 = 20,820.64/x
  3. Step 3: Cross multiply
    35,608.48x = 53,394.48 × 20,820.64
  4. Step 4: Simplify right side
    35,608.48x = 1,111,707,246.07
  5. Step 5: Solve for x
    x = 1,111,707,246.07/35,608.48
  6. Step 6: Final answer
    x = 31,220.29

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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.