Home / 67,039.40-100,559.10-40,752.20

Finding the Fourth Proportional to 67,039.40, 100,559.10 and 40,752.20

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Solution

The fourth proportional to 67,039.40, 100,559.10 and 40,752.20 is: 61,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,039.40 : 100,559.10 = 40,752.20 : x
  2. Step 2: Convert to fraction form
    67,039.40/100,559.10 = 40,752.20/x
  3. Step 3: Cross multiply
    67,039.40x = 100,559.10 × 40,752.20
  4. Step 4: Simplify right side
    67,039.40x = 4,098,004,555.02
  5. Step 5: Solve for x
    x = 4,098,004,555.02/67,039.40
  6. Step 6: Final answer
    x = 61,128.30

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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.