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Finding the Fourth Proportional to 43,015.70, 64,523.55 and 40,423.70

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Solution

The fourth proportional to 43,015.70, 64,523.55 and 40,423.70 is: 60,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,015.70 : 64,523.55 = 40,423.70 : x
  2. Step 2: Convert to fraction form
    43,015.70/64,523.55 = 40,423.70/x
  3. Step 3: Cross multiply
    43,015.70x = 64,523.55 × 40,423.70
  4. Step 4: Simplify right side
    43,015.70x = 2,608,280,628.14
  5. Step 5: Solve for x
    x = 2,608,280,628.14/43,015.70
  6. Step 6: Final answer
    x = 60,635.55

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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.