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Finding the Fourth Proportional to 83,995.80, 126,042.30 and 31,410.60

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Solution

The fourth proportional to 83,995.80, 126,042.30 and 31,410.60 is: 47,134.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,995.80 : 126,042.30 = 31,410.60 : x
  2. Step 2: Convert to fraction form
    83,995.80/126,042.30 = 31,410.60/x
  3. Step 3: Cross multiply
    83,995.80x = 126,042.30 × 31,410.60
  4. Step 4: Simplify right side
    83,995.80x = 3,959,064,268.38
  5. Step 5: Solve for x
    x = 3,959,064,268.38/83,995.80
  6. Step 6: Final answer
    x = 47,134.07

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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.