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Finding the Fourth Proportional to 75,461.28, 113,191.80 and 20,057.28

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Solution

The fourth proportional to 75,461.28, 113,191.80 and 20,057.28 is: 30,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,461.28 : 113,191.80 = 20,057.28 : x
  2. Step 2: Convert to fraction form
    75,461.28/113,191.80 = 20,057.28/x
  3. Step 3: Cross multiply
    75,461.28x = 113,191.80 × 20,057.28
  4. Step 4: Simplify right side
    75,461.28x = 2,270,319,626.30
  5. Step 5: Solve for x
    x = 2,270,319,626.30/75,461.28
  6. Step 6: Final answer
    x = 30,085.89

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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.