Home / 43,020.20-64,530.30-40,428.20

Finding the Fourth Proportional to 43,020.20, 64,530.30 and 40,428.20

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Solution

The fourth proportional to 43,020.20, 64,530.30 and 40,428.20 is: 60,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,020.20 : 64,530.30 = 40,428.20 : x
  2. Step 2: Convert to fraction form
    43,020.20/64,530.30 = 40,428.20/x
  3. Step 3: Cross multiply
    43,020.20x = 64,530.30 × 40,428.20
  4. Step 4: Simplify right side
    43,020.20x = 2,608,843,874.46
  5. Step 5: Solve for x
    x = 2,608,843,874.46/43,020.20
  6. Step 6: Final answer
    x = 60,642.30

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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.