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Finding the Fourth Proportional to 43,915.99, 65,864.13 and 20,200.76

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Solution

The fourth proportional to 43,915.99, 65,864.13 and 20,200.76 is: 30,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,915.99 : 65,864.13 = 20,200.76 : x
  2. Step 2: Convert to fraction form
    43,915.99/65,864.13 = 20,200.76/x
  3. Step 3: Cross multiply
    43,915.99x = 65,864.13 × 20,200.76
  4. Step 4: Simplify right side
    43,915.99x = 1,330,505,482.74
  5. Step 5: Solve for x
    x = 1,330,505,482.74/43,915.99
  6. Step 6: Final answer
    x = 30,296.61

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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.