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Finding the Fourth Proportional to 57,473.54, 86,211.76 and 15,920.90

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Solution

The fourth proportional to 57,473.54, 86,211.76 and 15,920.90 is: 23,881.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,473.54 : 86,211.76 = 15,920.90 : x
  2. Step 2: Convert to fraction form
    57,473.54/86,211.76 = 15,920.90/x
  3. Step 3: Cross multiply
    57,473.54x = 86,211.76 × 15,920.90
  4. Step 4: Simplify right side
    57,473.54x = 1,372,568,809.78
  5. Step 5: Solve for x
    x = 1,372,568,809.78/57,473.54
  6. Step 6: Final answer
    x = 23,881.75

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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.