Home / 40,771.20-61,099.20-30,158.40

Finding the Fourth Proportional to 40,771.20, 61,099.20 and 30,158.40

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Solution

The fourth proportional to 40,771.20, 61,099.20 and 30,158.40 is: 45,194.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,771.20 : 61,099.20 = 30,158.40 : x
  2. Step 2: Convert to fraction form
    40,771.20/61,099.20 = 30,158.40/x
  3. Step 3: Cross multiply
    40,771.20x = 61,099.20 × 30,158.40
  4. Step 4: Simplify right side
    40,771.20x = 1,842,654,113.28
  5. Step 5: Solve for x
    x = 1,842,654,113.28/40,771.20
  6. Step 6: Final answer
    x = 45,194.99

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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.