Home / 90,338.55-135,539.27-40,423.92

Finding the Fourth Proportional to 90,338.55, 135,539.27 and 40,423.92

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Solution

The fourth proportional to 90,338.55, 135,539.27 and 40,423.92 is: 60,649.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,338.55 : 135,539.27 = 40,423.92 : x
  2. Step 2: Convert to fraction form
    90,338.55/135,539.27 = 40,423.92/x
  3. Step 3: Cross multiply
    90,338.55x = 135,539.27 × 40,423.92
  4. Step 4: Simplify right side
    90,338.55x = 5,479,028,405.22
  5. Step 5: Solve for x
    x = 5,479,028,405.22/90,338.55
  6. Step 6: Final answer
    x = 60,649.95

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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.