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Finding the Fourth Proportional to 57,724.60, 86,586.90 and 39,013.60

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Solution

The fourth proportional to 57,724.60, 86,586.90 and 39,013.60 is: 58,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,724.60 : 86,586.90 = 39,013.60 : x
  2. Step 2: Convert to fraction form
    57,724.60/86,586.90 = 39,013.60/x
  3. Step 3: Cross multiply
    57,724.60x = 86,586.90 × 39,013.60
  4. Step 4: Simplify right side
    57,724.60x = 3,378,066,681.84
  5. Step 5: Solve for x
    x = 3,378,066,681.84/57,724.60
  6. Step 6: Final answer
    x = 58,520.40

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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.