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Finding the Fourth Proportional to 53,398.97, 80,098.46 and 20,126.50

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Solution

The fourth proportional to 53,398.97, 80,098.46 and 20,126.50 is: 30,189.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,398.97 : 80,098.46 = 20,126.50 : x
  2. Step 2: Convert to fraction form
    53,398.97/80,098.46 = 20,126.50/x
  3. Step 3: Cross multiply
    53,398.97x = 80,098.46 × 20,126.50
  4. Step 4: Simplify right side
    53,398.97x = 1,612,101,655.19
  5. Step 5: Solve for x
    x = 1,612,101,655.19/53,398.97
  6. Step 6: Final answer
    x = 30,189.75

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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.