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Finding the Fourth Proportional to 83,422.32, 125,133.36 and 21,092.88

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Solution

The fourth proportional to 83,422.32, 125,133.36 and 21,092.88 is: 31,639.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,422.32 : 125,133.36 = 21,092.88 : x
  2. Step 2: Convert to fraction form
    83,422.32/125,133.36 = 21,092.88/x
  3. Step 3: Cross multiply
    83,422.32x = 125,133.36 × 21,092.88
  4. Step 4: Simplify right side
    83,422.32x = 2,639,422,946.48
  5. Step 5: Solve for x
    x = 2,639,422,946.48/83,422.32
  6. Step 6: Final answer
    x = 31,639.29

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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.