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Finding the Fourth Proportional to 38,433.40, 57,552.90 and 30,657.40

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Solution

The fourth proportional to 38,433.40, 57,552.90 and 30,657.40 is: 45,908.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,433.40 : 57,552.90 = 30,657.40 : x
  2. Step 2: Convert to fraction form
    38,433.40/57,552.90 = 30,657.40/x
  3. Step 3: Cross multiply
    38,433.40x = 57,552.90 × 30,657.40
  4. Step 4: Simplify right side
    38,433.40x = 1,764,422,276.46
  5. Step 5: Solve for x
    x = 1,764,422,276.46/38,433.40
  6. Step 6: Final answer
    x = 45,908.57

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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.