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Finding the Fourth Proportional to 57,708.92, 86,559.06 and 20,269.32

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Solution

The fourth proportional to 57,708.92, 86,559.06 and 20,269.32 is: 30,402.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,708.92 : 86,559.06 = 20,269.32 : x
  2. Step 2: Convert to fraction form
    57,708.92/86,559.06 = 20,269.32/x
  3. Step 3: Cross multiply
    57,708.92x = 86,559.06 × 20,269.32
  4. Step 4: Simplify right side
    57,708.92x = 1,754,493,170.74
  5. Step 5: Solve for x
    x = 1,754,493,170.74/57,708.92
  6. Step 6: Final answer
    x = 30,402.46

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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.