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Finding the Fourth Proportional to 83,426.64, 125,143.80 and 30,826.32

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Solution

The fourth proportional to 83,426.64, 125,143.80 and 30,826.32 is: 46,240.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,426.64 : 125,143.80 = 30,826.32 : x
  2. Step 2: Convert to fraction form
    83,426.64/125,143.80 = 30,826.32/x
  3. Step 3: Cross multiply
    83,426.64x = 125,143.80 × 30,826.32
  4. Step 4: Simplify right side
    83,426.64x = 3,857,722,824.82
  5. Step 5: Solve for x
    x = 3,857,722,824.82/83,426.64
  6. Step 6: Final answer
    x = 46,240.90

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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.