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Finding the Fourth Proportional to 70,133.12, 105,137.12 and 25,749.68

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Solution

The fourth proportional to 70,133.12, 105,137.12 and 25,749.68 is: 38,601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,133.12 : 105,137.12 = 25,749.68 : x
  2. Step 2: Convert to fraction form
    70,133.12/105,137.12 = 25,749.68/x
  3. Step 3: Cross multiply
    70,133.12x = 105,137.12 × 25,749.68
  4. Step 4: Simplify right side
    70,133.12x = 2,707,247,196.12
  5. Step 5: Solve for x
    x = 2,707,247,196.12/70,133.12
  6. Step 6: Final answer
    x = 38,601.55

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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.