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Finding the Fourth Proportional to 57,713.60, 86,561.40 and 18,280.40

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Solution

The fourth proportional to 57,713.60, 86,561.40 and 18,280.40 is: 27,417.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,713.60 : 86,561.40 = 18,280.40 : x
  2. Step 2: Convert to fraction form
    57,713.60/86,561.40 = 18,280.40/x
  3. Step 3: Cross multiply
    57,713.60x = 86,561.40 × 18,280.40
  4. Step 4: Simplify right side
    57,713.60x = 1,582,377,016.56
  5. Step 5: Solve for x
    x = 1,582,377,016.56/57,713.60
  6. Step 6: Final answer
    x = 27,417.75

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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.