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Finding the Fourth Proportional to 48,580.56, 72,888.60 and 20,507.60

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Solution

The fourth proportional to 48,580.56, 72,888.60 and 20,507.60 is: 30,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,580.56 : 72,888.60 = 20,507.60 : x
  2. Step 2: Convert to fraction form
    48,580.56/72,888.60 = 20,507.60/x
  3. Step 3: Cross multiply
    48,580.56x = 72,888.60 × 20,507.60
  4. Step 4: Simplify right side
    48,580.56x = 1,494,770,253.36
  5. Step 5: Solve for x
    x = 1,494,770,253.36/48,580.56
  6. Step 6: Final answer
    x = 30,768.90

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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.