Home / 51,091.20-70,513.20-31,990.05

Finding the Fourth Proportional to 51,091.20, 70,513.20 and 31,990.05

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Solution

The fourth proportional to 51,091.20, 70,513.20 and 31,990.05 is: 44,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,091.20 : 70,513.20 = 31,990.05 : x
  2. Step 2: Convert to fraction form
    51,091.20/70,513.20 = 31,990.05/x
  3. Step 3: Cross multiply
    51,091.20x = 70,513.20 × 31,990.05
  4. Step 4: Simplify right side
    51,091.20x = 2,255,720,793.66
  5. Step 5: Solve for x
    x = 2,255,720,793.66/51,091.20
  6. Step 6: Final answer
    x = 44,150.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.