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Finding the Fourth Proportional to 91,791.64, 137,465.68 and 52,228.92

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Solution

The fourth proportional to 91,791.64, 137,465.68 and 52,228.92 is: 78,217.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.64 : 137,465.68 = 52,228.92 : x
  2. Step 2: Convert to fraction form
    91,791.64/137,465.68 = 52,228.92/x
  3. Step 3: Cross multiply
    91,791.64x = 137,465.68 × 52,228.92
  4. Step 4: Simplify right side
    91,791.64x = 7,179,684,003.47
  5. Step 5: Solve for x
    x = 7,179,684,003.47/91,791.64
  6. Step 6: Final answer
    x = 78,217.19

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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.