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Finding the Fourth Proportional to 91,425.60, 137,094.60 and 53,485.56

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Solution

The fourth proportional to 91,425.60, 137,094.60 and 53,485.56 is: 80,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,425.60 : 137,094.60 = 53,485.56 : x
  2. Step 2: Convert to fraction form
    91,425.60/137,094.60 = 53,485.56/x
  3. Step 3: Cross multiply
    91,425.60x = 137,094.60 × 53,485.56
  4. Step 4: Simplify right side
    91,425.60x = 7,332,581,453.98
  5. Step 5: Solve for x
    x = 7,332,581,453.98/91,425.60
  6. Step 6: Final answer
    x = 80,202.72

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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.