Home / 85,204.20-127,806.30-40,808.10

Finding the Fourth Proportional to 85,204.20, 127,806.30 and 40,808.10

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Solution

The fourth proportional to 85,204.20, 127,806.30 and 40,808.10 is: 61,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,204.20 : 127,806.30 = 40,808.10 : x
  2. Step 2: Convert to fraction form
    85,204.20/127,806.30 = 40,808.10/x
  3. Step 3: Cross multiply
    85,204.20x = 127,806.30 × 40,808.10
  4. Step 4: Simplify right side
    85,204.20x = 5,215,532,271.03
  5. Step 5: Solve for x
    x = 5,215,532,271.03/85,204.20
  6. Step 6: Final answer
    x = 61,212.15

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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.