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Finding the Fourth Proportional to 70,091.48, 105,029.56 and 47,572.90

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Solution

The fourth proportional to 70,091.48, 105,029.56 and 47,572.90 is: 71,286.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,091.48 : 105,029.56 = 47,572.90 : x
  2. Step 2: Convert to fraction form
    70,091.48/105,029.56 = 47,572.90/x
  3. Step 3: Cross multiply
    70,091.48x = 105,029.56 × 47,572.90
  4. Step 4: Simplify right side
    70,091.48x = 4,996,560,754.92
  5. Step 5: Solve for x
    x = 4,996,560,754.92/70,091.48
  6. Step 6: Final answer
    x = 71,286.28

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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.