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Finding the Fourth Proportional to 83,433.94, 125,149.77 and 20,254.55

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Solution

The fourth proportional to 83,433.94, 125,149.77 and 20,254.55 is: 30,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,433.94 : 125,149.77 = 20,254.55 : x
  2. Step 2: Convert to fraction form
    83,433.94/125,149.77 = 20,254.55/x
  3. Step 3: Cross multiply
    83,433.94x = 125,149.77 × 20,254.55
  4. Step 4: Simplify right side
    83,433.94x = 2,534,851,648.20
  5. Step 5: Solve for x
    x = 2,534,851,648.20/83,433.94
  6. Step 6: Final answer
    x = 30,381.54

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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.