Home / 87,079.56-120,194.63-51,290.20

Finding the Fourth Proportional to 87,079.56, 120,194.63 and 51,290.20

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Solution

The fourth proportional to 87,079.56, 120,194.63 and 51,290.20 is: 70,795.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,079.56 : 120,194.63 = 51,290.20 : x
  2. Step 2: Convert to fraction form
    87,079.56/120,194.63 = 51,290.20/x
  3. Step 3: Cross multiply
    87,079.56x = 120,194.63 × 51,290.20
  4. Step 4: Simplify right side
    87,079.56x = 6,164,806,611.63
  5. Step 5: Solve for x
    x = 6,164,806,611.63/87,079.56
  6. Step 6: Final answer
    x = 70,795.11

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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.