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Finding the Fourth Proportional to 83,970.28, 125,999.34 and 54,380.44

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Solution

The fourth proportional to 83,970.28, 125,999.34 and 54,380.44 is: 81,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,970.28 : 125,999.34 = 54,380.44 : x
  2. Step 2: Convert to fraction form
    83,970.28/125,999.34 = 54,380.44/x
  3. Step 3: Cross multiply
    83,970.28x = 125,999.34 × 54,380.44
  4. Step 4: Simplify right side
    83,970.28x = 6,851,899,548.91
  5. Step 5: Solve for x
    x = 6,851,899,548.91/83,970.28
  6. Step 6: Final answer
    x = 81,599.10

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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.