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Finding the Fourth Proportional to 75,455.28, 113,182.80 and 20,051.28

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Solution

The fourth proportional to 75,455.28, 113,182.80 and 20,051.28 is: 30,076.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,455.28 : 113,182.80 = 20,051.28 : x
  2. Step 2: Convert to fraction form
    75,455.28/113,182.80 = 20,051.28/x
  3. Step 3: Cross multiply
    75,455.28x = 113,182.80 × 20,051.28
  4. Step 4: Simplify right side
    75,455.28x = 2,269,460,013.98
  5. Step 5: Solve for x
    x = 2,269,460,013.98/75,455.28
  6. Step 6: Final answer
    x = 30,076.89

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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.