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Finding the Fourth Proportional to 57,892.48, 86,812.80 and 20,444.80

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Solution

The fourth proportional to 57,892.48, 86,812.80 and 20,444.80 is: 30,658.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,892.48 : 86,812.80 = 20,444.80 : x
  2. Step 2: Convert to fraction form
    57,892.48/86,812.80 = 20,444.80/x
  3. Step 3: Cross multiply
    57,892.48x = 86,812.80 × 20,444.80
  4. Step 4: Simplify right side
    57,892.48x = 1,774,870,333.44
  5. Step 5: Solve for x
    x = 1,774,870,333.44/57,892.48
  6. Step 6: Final answer
    x = 30,658.05

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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.