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Finding the Fourth Proportional to 91,155.60, 125,794.95 and 50,871.75

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Solution

The fourth proportional to 91,155.60, 125,794.95 and 50,871.75 is: 70,203.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,155.60 : 125,794.95 = 50,871.75 : x
  2. Step 2: Convert to fraction form
    91,155.60/125,794.95 = 50,871.75/x
  3. Step 3: Cross multiply
    91,155.60x = 125,794.95 × 50,871.75
  4. Step 4: Simplify right side
    91,155.60x = 6,399,409,247.66
  5. Step 5: Solve for x
    x = 6,399,409,247.66/91,155.60
  6. Step 6: Final answer
    x = 70,203.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.