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Finding the Fourth Proportional to 91,791.60, 137,687.40 and 52,352.70

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Solution

The fourth proportional to 91,791.60, 137,687.40 and 52,352.70 is: 78,529.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.60 : 137,687.40 = 52,352.70 : x
  2. Step 2: Convert to fraction form
    91,791.60/137,687.40 = 52,352.70/x
  3. Step 3: Cross multiply
    91,791.60x = 137,687.40 × 52,352.70
  4. Step 4: Simplify right side
    91,791.60x = 7,208,307,145.98
  5. Step 5: Solve for x
    x = 7,208,307,145.98/91,791.60
  6. Step 6: Final answer
    x = 78,529.05

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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.