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Finding the Fourth Proportional to 74,015.98, 111,007.01 and 20,711.75

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Solution

The fourth proportional to 74,015.98, 111,007.01 and 20,711.75 is: 31,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,015.98 : 111,007.01 = 20,711.75 : x
  2. Step 2: Convert to fraction form
    74,015.98/111,007.01 = 20,711.75/x
  3. Step 3: Cross multiply
    74,015.98x = 111,007.01 × 20,711.75
  4. Step 4: Simplify right side
    74,015.98x = 2,299,149,444.02
  5. Step 5: Solve for x
    x = 2,299,149,444.02/74,015.98
  6. Step 6: Final answer
    x = 31,062.88

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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.