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Finding the Fourth Proportional to 76,316.42, 114,473.42 and 20,912.42

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Solution

The fourth proportional to 76,316.42, 114,473.42 and 20,912.42 is: 31,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,316.42 : 114,473.42 = 20,912.42 : x
  2. Step 2: Convert to fraction form
    76,316.42/114,473.42 = 20,912.42/x
  3. Step 3: Cross multiply
    76,316.42x = 114,473.42 × 20,912.42
  4. Step 4: Simplify right side
    76,316.42x = 2,393,916,237.88
  5. Step 5: Solve for x
    x = 2,393,916,237.88/76,316.42
  6. Step 6: Final answer
    x = 31,368.30

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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.