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Finding the Fourth Proportional to 76,614.44, 105,715.04 and 42,618.44

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Solution

The fourth proportional to 76,614.44, 105,715.04 and 42,618.44 is: 58,806.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,614.44 : 105,715.04 = 42,618.44 : x
  2. Step 2: Convert to fraction form
    76,614.44/105,715.04 = 42,618.44/x
  3. Step 3: Cross multiply
    76,614.44x = 105,715.04 × 42,618.44
  4. Step 4: Simplify right side
    76,614.44x = 4,505,410,089.34
  5. Step 5: Solve for x
    x = 4,505,410,089.34/76,614.44
  6. Step 6: Final answer
    x = 58,806.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.